Number of (n+2)X5 0..1 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically, diagonally or antidiagonally exactly one way, and new values 0..1 introduced in row major order.
A204356
Number of (n+2)X5 0..1 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically, diagonally or antidiagonally exactly one way, and new values 0..1 introduced in row major order.
Terms
- a(0) =764a(1) =2063a(2) =5516a(3) =13721a(4) =35690a(5) =92286a(6) =236382a(7) =607036a(8) =1562386a(9) =4024090a(10) =10362274a(11) =26670982a(12) =68640970a(13) =176707668a(14) =454941820a(15) =1171126358a(16) =3014574254a(17) =7760190950a(18) =19977148404a(19) =51426366674a(20) =132382169446a(21) =340781628584a(22) =877258120820
External references
- oeis: A204356