Number of (n+1)X(4+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.
A263795
Number of (n+1)X(4+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.
Terms
- a(0) =3a(1) =3a(2) =7a(3) =7a(4) =17a(5) =18a(6) =56a(7) =66a(8) =218a(9) =272a(10) =798a(11) =1008a(12) =2567a(13) =3227a(14) =7290a(15) =9072a(16) =18622a(17) =22912a(18) =43560a(19) =52998a(20) =94678a(21) =113983a(22) =193427a(23) =230607a(24) =374843a(25) =442911a(26) =694073a(27) =813413a(28) =1235202a(29) =1436754
External references
- oeis: A263795