Number of (n+2) X 3 0..1 arrays with no 3 X 3 subblock having three equal diagonal elements or three equal antidiagonal elements, and new values 0..1 introduced in row major order.
A204391
Number of (n+2) X 3 0..1 arrays with no 3 X 3 subblock having three equal diagonal elements or three equal antidiagonal elements, and new values 0..1 introduced in row major order.
Terms
- a(0) =144a(1) =648a(2) =2952a(3) =13448a(4) =61336a(5) =279752a(6) =1276088a(7) =5820872a(8) =26552184a(9) =121119048a(10) =552490872a(11) =2520216008a(12) =11496098296a(13) =52440058952a(14) =239208098168
External references
- oeis: A204391