

A202456


Number of (n+2)X5 binary arrays with consecutive windows of three bits considered as a binary number nondecreasing in every row and column


1



1000, 1876, 3362, 5735, 9338, 14586, 21972, 32073, 45556, 63184, 85822, 114443, 150134, 194102, 247680, 312333, 389664, 481420, 589498, 715951, 862994, 1033010, 1228556, 1452369, 1707372, 1996680, 2323606, 2691667, 3104590, 3566318, 4081016
(list;
graph;
refs;
listen;
history;
text;
internal format)



OFFSET

1,1


COMMENTS

Column 3 of A202461


LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210


FORMULA

Empirical: a(n) = (1/20)*n^5 + 2*n^4 + (275/12)*n^3 + 113*n^2 + (10351/30)*n + 517


EXAMPLE

Some solutions for 6X6
..0..0..0..0..0....0..0..0..1..0....0..0..0..0..0....0..0..0..0..0
..0..0..0..0..0....0..0..0..1..0....0..0..0..0..0....0..0..0..0..0
..0..0..0..0..0....0..0..0..1..0....0..0..0..0..1....0..0..0..0..0
..0..0..0..0..1....0..1..1..1..1....0..0..1..1..1....0..0..1..0..1
..0..0..1..0..0....1..1..1..1..1....0..0..1..0..1....0..0..0..1..1
..0..0..0..0..0....0..1..1..1..1....0..0..0..0..1....0..1..1..1..1


CROSSREFS

Sequence in context: A004265 A004266 A004267 * A168650 A043491 A100988
Adjacent sequences: A202453 A202454 A202455 * A202457 A202458 A202459


KEYWORD

nonn


AUTHOR

R. H. Hardin Dec 19 2011


STATUS

approved



