A269763 Number of nX4 0..5 arrays with some element plus some horizontally or vertically adjacent neighbor totalling five exactly once.

450, 524160, 326697720, 170119348800, 81208264293720, 36821411380183680, 16136599337765506680, 6902518041829140001920, 2899610192068539725611800, 1201070898923243105905234560, 491952252969600904794435746040

Offset

1,1

Comments

Column 4 of A269767.

Links

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

Formula

Empirical: a(n) = 798*a(n-1) -180699*a(n-2) +8707236*a(n-3) -167225067*a(n-4) +1392360966*a(n-5) -4194764289*a(n-6) for n>7

Example

Some solutions for n=1
..5..0..1..0. .5..0..0..3. .2..2..3..3. .5..0..0..0. .0..4..4..1

Crossrefs

Cf. A269767.

Sequence in context: A263820 A269884 A145492 * A020268 A345319 A066322

Adjacent sequences: A269760 A269761 A269762 * A269764 A269765 A269766

Keyword

nonn

Author

R. H. Hardin, Mar 04 2016

Status

approved