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

A255222

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

Terms

    a(0) =22a(1) =28a(2) =37a(3) =49a(4) =67a(5) =94a(6) =133a(7) =190a(8) =274a(9) =397a(10) =577a(11) =841a(12) =1228a(13) =1795a(14) =2626a(15) =3844a(16) =5629a(17) =8245a(18) =12079a(19) =17698a(20) =25933a(21) =38002a(22) =55690a(23) =81613a(24) =119605a(25) =175285a(26) =256888a(27) =376483a(28) =551758a(29) =808636

External references