Number of simply 8-connected polyominoes of site-perimeter n.
A216819
Number of simply 8-connected polyominoes of site-perimeter n.
Terms
- a(0) =1a(1) =0a(2) =2a(3) =4a(4) =12a(5) =32a(6) =110a(7) =340a(8) =1209a(9) =4256a(10) =15974a(11) =60232
External references
- oeis: A216819