Number of (n+2) X (1+2) 0..1 arrays with no 3 x 3 subblock diagonal sum 2 and no antidiagonal sum 2 and no row sum 0 and no column sum 0.
A255785
Number of (n+2) X (1+2) 0..1 arrays with no 3 x 3 subblock diagonal sum 2 and no antidiagonal sum 2 and no row sum 0 and no column sum 0.
Terms
- a(0) =90a(1) =177a(2) =361a(3) =715a(4) =1478a(5) =2969a(6) =6186a(7) =12534a(8) =26219a(9) =53487a(10) =112079a(11) =229756a(12) =481725a(13) =990964a(14) =2077526a(15) =4284777a(16) =8978859a(17) =18554317a(18) =38857870a(19) =80416809a(20) =168307678a(21) =348718298a(22) =729394343a(23) =1512628937a(24) =3162067127a(25) =6562395892a(26) =13711273601
External references
- oeis: A255785