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

A256742

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

Terms

    a(0) =393a(1) =570a(2) =1564a(3) =2512a(4) =6352a(5) =12280a(6) =28816a(7) =60728a(8) =137768a(9) =311200a(10) =695592a(11) =1606920a(12) =3675600a(13) =8477144a(14) =19719880a(15) =45890144a(16) =107177032a(17) =251576104a(18) =590847248a(19) =1391314808a(20) =3284435240a(21) =7758601632a(22) =18359082728a(23) =43496258888a(24) =103115774544

External references