Number of (3+2)X(n+2) 0..1 arrays with every 3X3 subblock sum of the two sums of the diagonal and antidiagonal minus the two minimums of the central column and central row nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
A254909
Number of (3+2)X(n+2) 0..1 arrays with every 3X3 subblock sum of the two sums of the diagonal and antidiagonal minus the two minimums of the central column and central row nondecreasing horizontally, vertically and ne-to-sw antidiagonally.
Terms
- a(0) =7579a(1) =13444a(2) =24358a(3) =50697a(4) =86176a(5) =138819a(6) =230095a(7) =343854a(8) =487927a(9) =682152a(10) =947151a(11) =1301258a(12) =1732148a(13) =2291799a(14) =3011782a(15) =3927169a(16) =5058503a(17) =6444608a(18) =8204544a(19) =10432387a(20) =13144119a(21) =16482230a(22) =20684713a(23) =25937249a(24) =32496192a(25) =40698880a(26) =51124639
External references
- oeis: A254909