A269825 Number of nX4 0..4 arrays with some element plus some horizontally, diagonally, antidiagonally or vertically adjacent neighbor totalling four exactly once.

240, 39784, 3200604, 240637408, 16644595392, 1109236460528, 71730749075588, 4544255355000752, 283289815771686692, 17440137572474977008, 1062799029214265825864, 64226079502012687928352

Offset

1,1

Comments

Column 4 of A269829.

Links

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

R. H. Hardin, Empirical recurrence of order 48

Formula

Empirical recurrence of order 48 (see link above)

Example

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

Crossrefs

Cf. A269829.

Sequence in context: A110163 A323981 A258082 * A232843 A289636 A001943

Adjacent sequences: A269822 A269823 A269824 * A269826 A269827 A269828

Keyword

nonn

Author

R. H. Hardin, Mar 05 2016

Status

approved