The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A331908

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A331908

The number of regions inside a hexagram formed by the straight line segments mutually connecting all vertices and all points that divide the sides into n equal parts.
(history; published version)

#24 by N. J. A. Sloane at Sun May 10 14:55:18 EDT 2020

STATUS

proposed

approved

#23 by Lars Blomberg at Sun May 10 12:57:33 EDT 2020

STATUS

editing

proposed

#22 by Lars Blomberg at Sun May 10 12:50:06 EDT 2020

DATA

168, 3588, 20424, 73860, 189468, 402216, 782808, 1385040, 2214108, 3423840, 5196312, 7218552, 10353432, 13823772, 18047124, 24083736, 31051152, 38334972, 48877440, 59201544, 72052956, 88004184, 106601088, 124009020

EXTENSIONS

a(6)-a(24) from Lars Blomberg, May 10 2020

STATUS

approved

editing

#21 by N. J. A. Sloane at Mon Mar 09 09:19:11 EDT 2020

STATUS

editing

approved

#20 by Scott R. Shannon at Mon Mar 09 00:02:23 EDT 2020

LINKS

Scott R. Shannon, <a href="/A331908/a331908_6.png">Hexagram regions for with random distance-based coloring for n = 1</a>.

Scott R. Shannon, <a href="/A331908/a331908_7.png">Hexagram regions for with random distance-based coloring for n = 2</a>.

Scott R. Shannon, <a href="/A331908/a331908_8.png">Hexagram regions for with random distance-based coloring for n = 3</a>.

#19 by Scott R. Shannon at Mon Mar 09 00:01:36 EDT 2020

LINKS

Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/Hexagram.html">Hexagram</a>.

#18 by Scott R. Shannon at Mon Mar 09 00:00:48 EDT 2020

LINKS

Scott R. Shannon, <a href="/A331908/a331908_7.png">Hexagram regions for random distance-based coloring n = 2</a>2.

Scott R. Shannon, <a href="/A331908/a331908_8.png">Hexagram regions for random distance-based coloring n = 3</a>.

#17 by Scott R. Shannon at Sun Mar 08 23:59:16 EDT 2020

LINKS

Scott R. Shannon, <a href="/A331908/a331908_6.png">Hexagram regions for random distance-based coloring n = 1</a>.

Scott R. Shannon, <a href="/A331908/a331908_7.png">Hexagram regions for random distance-based coloring n = 2</a>2

#16 by Scott R. Shannon at Sun Mar 08 01:57:22 EST 2020

CROSSREFS

Cf. A007678, A092867, A331452, A331906, A331909 (which gives distribution of polygons by number of sides).

Cf. A331909 (n-gons), A333116 (vertices), A333049 (edges), A007678, A092867, A331452, A331906.

STATUS

approved

editing

#15 by N. J. A. Sloane at Sat Feb 01 01:08:46 EST 2020

STATUS

proposed

approved