A269827 Number of nX6 0..4 arrays with some element plus some horizontally, diagonally, antidiagonally or vertically adjacent neighbor totalling four exactly once.

6400, 5145736, 2472983556, 1109236460528, 467693538063508, 190428267451649488, 75641344262475714972, 29473512707098125940768, 11320636579997479605633644, 4297304706560967747684698760

Offset

1,1

Comments

Column 6 of A269829.

Links

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

Example

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

Crossrefs

Cf. A269829.

Sequence in context: A186064 A251454 A237954 * A270056 A031578 A252612

Adjacent sequences: A269824 A269825 A269826 * A269828 A269829 A269830

Keyword

nonn

Author

R. H. Hardin, Mar 05 2016

Status

approved