The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A001149

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A001149

A self-generating sequence: a(1)=1, a(2)=2, a(n+1) chosen so that a(n+1)-a(n-1) is the first number not obtainable as a(j)-a(i) for 1<=i<j<=n.
(history; published version)

#37 by N. J. A. Sloane at Mon Jun 26 22:58:43 EDT 2017

STATUS

reviewed

approved

#36 by Jon E. Schoenfield at Mon Jun 26 22:22:39 EDT 2017

STATUS

proposed

reviewed

#35 by Jon E. Schoenfield at Mon Jun 26 22:22:31 EDT 2017

STATUS

editing

proposed

#34 by Jon E. Schoenfield at Mon Jun 26 22:22:26 EDT 2017

AUTHOR

N. J. A. Sloane.

STATUS

reviewed

editing

#33 by Michel Marcus at Mon Jun 26 16:08:39 EDT 2017

STATUS

proposed

reviewed

#32 by Nathan Fox at Mon Jun 26 15:34:09 EDT 2017

STATUS

editing

proposed

#31 by Nathan Fox at Mon Jun 26 15:23:46 EDT 2017

LINKS

R. K. Guy, <a href="/A005347/a005347.pdf">The Second Strong Law of Small Numbers</a>, Math. Mag, 63 (1990), no. 1, 3-20. [Annotated scanned copy]

#30 by Nathan Fox at Mon Jun 26 14:52:22 EDT 2017

LINKS

R. K. Guy and N. J. A. Sloane, <a href="/A005180/a005180.pdf">Correspondence</a>, 1988.

STATUS

approved

editing

#29 by Alois P. Heinz at Wed Jul 01 11:30:34 EDT 2015

STATUS

editing

approved

#28 by Alois P. Heinz at Wed Jul 01 11:30:24 EDT 2015

DATA

1, 2, 3, 5, 8, 13, 17, 26, 34, 45, 54, 67, 81, 97, 115, 132, 153, 171, 198, 228, 256, 288, 323, 357, 400, 439, 488, 530, 581, 627, 681, 732, 790, 843, 908, 963, 1029, 1085, 1152, 1213, 1284, 1346, 1418, 1484, 1561, 1630, 1710, 1785, 1867, 1945, 2034, 2116, 2212, 2295, 2392, 2477, 2579, 2669, 2777

STATUS

proposed

editing