Number of (n+2)X(3+2) 0..1 arrays with no 3x3 subblock diagonal sum 0 or 1 and no antidiagonal sum 0 or 1 and no row sum 0 or 1 and no column sum 0 or 1.
A255022
Number of (n+2)X(3+2) 0..1 arrays with no 3x3 subblock diagonal sum 0 or 1 and no antidiagonal sum 0 or 1 and no row sum 0 or 1 and no column sum 0 or 1.
Terms
- a(0) =117a(1) =405a(2) =1489a(3) =5077a(4) =17447a(5) =60237a(6) =206739a(7) =711741a(8) =2455031a(9) =8451157a(10) =29078117a(11) =100127001a(12) =344830161a(13) =1187280665a(14) =4087598971a(15) =14073866371a(16) =48459148689a(17) =166851565139a(18) =574482172185
External references
- oeis: A255022