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A289651 T(n,k) = Number of n X k 0..1 arrays with the number of 1's horizontally, antidiagonally or vertically adjacent to some 0 two less than the number of 0's adjacent to some 1. 8
0, 0, 0, 0, 2, 0, 0, 11, 11, 0, 0, 44, 61, 44, 0, 1, 170, 607, 607, 170, 1, 3, 642, 3160, 8554, 3160, 642, 3, 10, 2421, 31271, 121162, 121162, 31271, 2421, 10, 24, 9142, 183390, 1756800, 2662095, 1756800, 183390, 9142, 24, 60, 34572, 1714758, 25760875 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,5

COMMENTS

Table starts

..0.....0........0..........0.............0................1..................3

..0.....2.......11.........44...........170..............642...............2421

..0....11.......61........607..........3160............31271.............183390

..0....44......607.......8554........121162..........1756800...........25760875

..0...170.....3160.....121162.......2662095.........98170524.........2439241607

..1...642....31271....1756800......98170524.......5675111511.......332113863074

..3..2421...183390...25760875....2439241607.....332113863074.....35072966294346

.10..9142..1714758..382162921...85298181531...19700973655406...4615203834449304

.24.34572.10957160.5717697619.2290353406298.1179502836506537.519140871714574338

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..180

EXAMPLE

Some solutions for n=4, k=4

..1..0..0..0. .1..0..0..0. .0..1..1..0. .0..1..0..0. .1..0..0..1

..1..1..1..0. .0..1..0..1. .0..0..1..0. .1..1..0..1. .0..1..0..1

..1..0..1..0. .0..1..1..0. .0..1..1..1. .0..1..0..1. .0..1..1..0

..0..0..1..0. .0..1..0..1. .0..1..0..0. .0..1..0..0. .0..0..1..0

CROSSREFS

Column 1 is A286209.

Sequence in context: A278099 A000171 A054922 * A302751 A244139 A231031

Adjacent sequences:  A289648 A289649 A289650 * A289652 A289653 A289654

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin, Jul 09 2017

STATUS

approved

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Last modified October 20 21:32 EDT 2020. Contains 337910 sequences. (Running on oeis4.)