A230917 Number of 4Xn 0..7 arrays x(i,j) with each element horizontally or antidiagonally next to at least one element with value (x(i,j)+1) mod 8, and upper left element zero

0, 0, 0, 118, 5714, 154352, 4725576, 148720522, 4752381758, 151802078918, 4831723113864, 153597529651048, 4882134369209864, 155195921955688850, 4933695769219550664, 156842489770583030128, 4985982499472122206542

Offset

1,4

Comments

Row 4 of A230915

Links

R. H. Hardin, Table of n, a(n) for n = 1..26

Example

Some solutions for n=4
..0..1..0..7....0..1..2..3....0..1..2..1....0..1..0..7....0..1..0..7
..2..3..4..5....0..7..4..3....2..3..4..5....2..3..6..5....2..3..6..5
..2..1..6..5....6..5..4..3....2..3..6..7....4..5..4..3....4..5..4..3
..0..7..6..5....4..1..2..1....2..1..0..7....4..3..2..1....0..1..2..1

Crossrefs

Sequence in context: A232776 A175876 A220715 * A230248 A263954 A231283

Adjacent sequences: A230914 A230915 A230916 * A230918 A230919 A230920

Keyword

nonn

Author

R. H. Hardin, Nov 01 2013

Status

approved