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

A256741

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

Terms

    a(0) =153a(1) =393a(2) =857a(3) =2065a(4) =5255a(5) =12914a(6) =31032a(7) =75634a(8) =185630a(9) =453792a(10) =1107035a(11) =2701934a(12) =6602744a(13) =16133440a(14) =39398362a(15) =96225937a(16) =235055049a(17) =574159002a(18) =1402439544a(19) =3425537766a(20) =8367239407a(21) =20438044264a(22) =49921902827a(23) =121939228872a(24) =297849461916

External references