A263798 Number of (n+1)X(7+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 nonincreasing

5, 5, 25, 56, 494, 4991, 62904, 760671, 8468941, 90476206, 850301770, 7703098612, 62160939006, 482749236704, 3416830587073, 23238401292501, 146883022822593, 892090634118666, 5108443008090443, 28144017611172958, 147708619212786406

Offset

1,1

Comments

Column 7 of A263799

Links

R. H. Hardin, Table of n, a(n) for n = 1..76

Example

Some solutions for n=5
..1..1..1..1..0..0..0..0....1..1..1..1..0..0..0..0....1..1..1..1..1..1..0..0
..1..1..0..0..1..1..0..0....1..1..0..0..1..1..0..0....1..1..1..1..0..0..1..1
..1..0..1..0..1..1..1..0....1..0..1..0..1..0..1..1....1..1..0..0..1..1..1..1
..1..0..0..1..0..0..0..0....1..0..0..1..0..0..1..1....1..1..0..0..0..0..0..0
..0..1..1..0..1..0..0..1....0..0..1..0..0..1..1..1....0..0..0..0..1..1..1..1
..0..1..0..0..1..0..1..1....0..0..0..0..0..0..1..1....0..0..0..0..0..0..1..1

Crossrefs

Cf. A263799

Sequence in context: A263872 A237654 A038247 * A257607 A093643 A223263

Adjacent sequences: A263795 A263796 A263797 * A263799 A263800 A263801

Keyword

nonn

Author

R. H. Hardin, Oct 26 2015

Status

approved