A263871 Number of (n+1)X(6+1) 0..1 arrays with each row and column divisible by 3, read as a binary number with top and left being the most significant bits, and rows and columns lexicographically nondecreasing.

4, 4, 14, 17, 93, 379, 2909, 20374, 121878, 785046, 3811314, 20729459, 86398810, 401508982, 1487808602, 6052744740, 20393912111, 74234335758, 230979488062, 765576270536, 2224840569660, 6807977828585, 18640043440258, 53237097603882

Offset

1,1

Comments

Column 6 of A263873.

Links

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

R. H. Hardin, Empirical recurrence of order 79

Formula

Empirical recurrence of order 79 (see link above)

Example

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

Crossrefs

Cf. A263873.

Sequence in context: A361801 A263870 A263796 * A326982 A263797 A376531

Adjacent sequences: A263868 A263869 A263870 * A263872 A263873 A263874

Keyword

nonn

Author

R. H. Hardin, Oct 28 2015

Status

approved