Number of (n+2)X(n+2) 0..1 arrays with no 3x3 subblock diagonal sum less than the antidiagonal sum or central row sum equal to the central column sum.
A258537
Number of (n+2)X(n+2) 0..1 arrays with no 3x3 subblock diagonal sum less than the antidiagonal sum or central row sum equal to the central column sum.
Terms
- a(0) =220a(1) =2916a(2) =20736a(3) =161604a(4) =726880a(5) =4359744a(6) =15444224a(7) =78039556a(8) =238216520a(9) =1091641600a(10) =3064541952a(11) =13194657424a(12) =35313510072a(13) =145324113796a(14) =378585527360
External references
- oeis: A258537