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 2 elements linked to themselves.
A271611
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 2 elements linked to themselves.
Terms
- a(0) =1a(1) =3a(2) =17a(3) =114a(4) =240a(5) =2238a(6) =216318a(7) =5622392a(8) =20454036a(9) =970623228
External references
- oeis: A271611