Number of nX3 0..1 arrays with every element equal to 1, 2, 3 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
A302467
Number of nX3 0..1 arrays with every element equal to 1, 2, 3 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =1a(1) =14a(2) =49a(3) =250a(4) =1147a(5) =5486a(6) =25599a(7) =121626a(8) =572657a(9) =2702270a(10) =12758927a(11) =60200726a(12) =284075917a(13) =1340774674a(14) =6327058239a(15) =29858586774a(16) =140911377557a(17) =664983975698
External references
- oeis: A302467