Number of (n+2)X(3+2) 0..1 arrays with no 3x3 subblock diagonal sum one and no antidiagonal sum two.

A254849

Number of (n+2)X(3+2) 0..1 arrays with no 3x3 subblock diagonal sum one and no antidiagonal sum two.

Terms

    a(0) =1632a(1) =2916a(2) =5904a(3) =13456a(4) =34176a(5) =87616a(6) =216000a(7) =518400a(8) =1246464a(9) =3069504a(10) =7729920a(11) =19501056a(12) =48484800a(13) =118722816a(14) =289380096a(15) =710968896a(16) =1766830464a(17) =4410022464a(18) =10962427392a(19) =27051038784a(20) =66462004800a(21) =163578184704a(22) =404630224128

External references