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

A257440

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

Terms

    a(0) =30a(1) =36a(2) =39a(3) =49a(4) =65a(5) =90a(6) =128a(7) =186a(8) =269a(9) =392a(10) =573a(11) =836a(12) =1223a(13) =1791a(14) =2621a(15) =3839a(16) =5625a(17) =8240a(18) =12074a(19) =17694a(20) =25928a(21) =37997a(22) =55686a(23) =81608a(24) =119600a(25) =175281a(26) =256883a(27) =376478a(28) =551754a(29) =808631

External references