A263553 Number of (n+1)X(3+1) 0..4 arrays with each row and column divisible by 7, read as a base-5 number with top and left being the most significant digits.

40, 2210, 198581, 17320937, 1552603242, 139465708673, 12550664907064, 1129509677450598, 101655857029690069, 9149001966275109079, 823409883417842805426, 74106876482781805290919, 6669618821669764582641586

Offset

1,1

Comments

Column 3 of A263558.

Links

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

Example

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

Crossrefs

Cf. A263558.

Sequence in context: A223177 A140729 A003741 * A049215 A221658 A188154

Adjacent sequences: A263550 A263551 A263552 * A263554 A263555 A263556

Keyword

nonn

Author

R. H. Hardin, Oct 21 2015

Status

approved