Number of (n+2)X(1+2) 0..1 arrays with no 3x3 subblock diagonal sum equal to the antidiagonal sum or central row sum less than the central column sum.
A257354
Number of (n+2)X(1+2) 0..1 arrays with no 3x3 subblock diagonal sum equal to the antidiagonal sum or central row sum less than the central column sum.
Terms
- a(0) =220a(1) =784a(2) =3108a(3) =12100a(4) =45684a(5) =174724a(6) =674856a(7) =2585664a(8) =9853288a(9) =37724164a(10) =144911780a(11) =555167844a(12) =2122710008a(13) =8128825600a(14) =31164354584a(15) =119371632004a(16) =456940637076
External references
- oeis: A257354