The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A215954

(Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
Showing all changes.

Number of horizontal, vertical and diagonal neighbor colorings of the even squares of an nX3 array with new integer colors introduced in row major order
(history; published version)

#4 by R. H. Hardin at Tue Aug 28 14:26:44 EDT 2012

STATUS

editing

approved

#3 by R. H. Hardin at Tue Aug 28 14:26:40 EDT 2012

LINKS

R. H. Hardin, <a href="/A215954/b215954.txt">Table of n, a(n) for n = 1..41</a>

#2 by R. H. Hardin at Tue Aug 28 14:26:25 EDT 2012

NAME

allocated for R. H. Hardin

Number of horizontal, vertical and diagonal neighbor colorings of the even squares of an nX3 array with new integer colors introduced in row major order

DATA

1, 2, 10, 29, 366, 1534, 35167, 188835, 6618472, 42756208, 2081922515, 15590248868, 993343650912, 8414029179365, 673316834487162, 6340176007793060, 618445940056365121, 6390402969619162909, 742701928727400476918

OFFSET

1,2

COMMENTS

Column 3 of A215959

EXAMPLE

Some solutions for n=4

..0..x..1....0..x..1....0..x..1....0..x..1....0..x..1....0..x..1....0..x..1

..x..2..x....x..2..x....x..2..x....x..2..x....x..1..x....x..1..x....x..2..x

..2..x..3....2..x..0....2..x..3....1..x..0....2..x..3....1..x..2....2..x..3

..x..4..x....x..1..x....x..0..x....x..3..x....x..4..x....x..0..x....x..1..x

KEYWORD

allocated

nonn

AUTHOR

R. H. Hardin Aug 28 2012

STATUS

approved

editing

#1 by R. H. Hardin at Tue Aug 28 14:23:31 EDT 2012

NAME

allocated for R. H. Hardin

KEYWORD

allocated

STATUS

approved