Number of (n+2) X (1+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.

A255221

Number of (n+2) X (1+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) =23a(1) =22a(2) =31a(3) =43a(4) =61a(5) =88a(6) =127a(7) =184a(8) =268a(9) =391a(10) =571a(11) =835a(12) =1222a(13) =1789a(14) =2620a(15) =3838a(16) =5623a(17) =8239a(18) =12073a(19) =17692a(20) =25927a(21) =37996a(22) =55684a(23) =81607a(24) =119599a(25) =175279a(26) =256882a(27) =376477a(28) =551752a(29) =808630

External references