A262469 Number of (n+1)X(5+1) 0..1 arrays with each row divisible by 3 and each column divisible by 5, read as a binary number with top and left being the most significant bits.
1, 22, 484, 3055, 30229, 552430, 11489332, 198237391, 3805146805, 77803476910, 1612625364820, 33119154814159, 687120423331861, 14386036609956334, 302135208204396148, 6368273090580898255, 134603658832727226229
Offset: 1
Keywords
Examples
Some solutions for n=4 ..0..0..0..1..1..0....1..1..0..0..1..1....1..0..1..1..0..1....0..0..0..0..0..0 ..1..1..1..1..0..0....1..0..1..0..1..0....1..0..1..1..0..1....1..1..1..1..1..1 ..0..1..1..1..1..0....1..1..0..0..1..1....1..0..0..1..0..0....1..1..1..0..0..1 ..1..1..1..1..0..0....1..0..1..0..1..0....1..0..0..1..0..0....1..1..1..1..1..1 ..0..1..1..0..0..0....0..0..0..0..0..0....0..0..1..0..0..1....1..1..1..0..0..1
Links
- R. H. Hardin, Table of n, a(n) for n = 1..210
Crossrefs
Cf. A262472.
Comments