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 0 or 1 and no column sum 0 or 1.

A256803

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 0 or 1 and no column sum 0 or 1.

Terms

    a(0) =32a(1) =86a(2) =237a(3) =641a(4) =1731a(5) =4690a(6) =12707a(7) =34408a(8) =93168a(9) =252313a(10) =683305a(11) =1850413a(12) =5011000a(13) =13570213a(14) =36749148a(15) =99519030a(16) =269504389a(17) =729837077a(18) =1976449263a(19) =5352360678a(20) =14494564867a(21) =39252288748a(22) =106297917568a(23) =287862131449a(24) =779550625853

External references