Number of (n+2)X(3+2) 0..1 arrays with no 3x3 subblock diagonal sum 1 and no antidiagonal sum 1 and no row sum 0 or 1 and no column sum 0 or 1.
A255154
Number of (n+2)X(3+2) 0..1 arrays with no 3x3 subblock diagonal sum 1 and no antidiagonal sum 1 and no row sum 0 or 1 and no column sum 0 or 1.
Terms
- a(0) =141a(1) =459a(2) =1637a(3) =5615a(4) =19437a(5) =67465a(6) =232685a(7) =804189a(8) =2784175a(9) =9625969a(10) =33269463a(11) =115046055a(12) =397861797a(13) =1375713437a(14) =4756735709a(15) =16447734043a(16) =56873715759a(17) =196658964777a(18) =680003968725
External references
- oeis: A255154