Number of ways to reciprocally link elements of an n X n X n triangular array with themselves or a neighbor, with no more than 6 elements linked to themselves.
A271615
Number of ways to reciprocally link elements of an n X n X n triangular array with themselves or a neighbor, with no more than 6 elements linked to themselves.
Terms
- a(0) =1a(1) =4a(2) =27a(3) =406a(4) =7764a(5) =222936a(6) =18314708a(7) =1182352612a(8) =30892003921
External references
- oeis: A271615