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.
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.
Terms
- a(0) =4a(1) =4a(2) =14a(3) =17a(4) =93a(5) =379a(6) =2909a(7) =20374a(8) =121878a(9) =785046a(10) =3811314a(11) =20729459a(12) =86398810a(13) =401508982a(14) =1487808602a(15) =6052744740a(16) =20393912111a(17) =74234335758a(18) =230979488062a(19) =765576270536
External references
- oeis: A263871