Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for square lattice.
A019266
Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for square lattice.
Terms
- a(0) =1a(1) =0a(2) =4a(3) =12a(4) =56a(5) =280a(6) =1488a(7) =8232a(8) =47008a(9) =274824a(10) =1636520a(11) =9890584a(12) =60510480a(13) =374019776a(14) =2332131872a(15) =14651535840a(16) =92653845120a(17) =589317728376
External references
- oeis: A019266