Number of (n+2)X(4+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.
A255023
Number of (n+2)X(4+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) =269a(1) =1121a(2) =5077a(3) =21854a(4) =92217a(5) =391926a(6) =1669286a(7) =7114859a(8) =30309034a(9) =129016023a(10) =549319029a(11) =2339546992a(12) =9963141837a(13) =42425232242a(14) =180661430018a(15) =769335984165
External references
- oeis: A255023