90176
domain: N
Appears in sequences
- Number of perfect matchings in the graph C_6 x C_n.at n=3A232804
- a(n) = number of regions in the configuration A290447(n).at n=40A290865
- Number of domino tilings of a 2n X 2n toroidal grid.at n=3A335586
- Square array T(n,k), n >= 1, k >= 1, read by antidiagonals downwards: number of perfect matchings in the graph C_{2n} x C_k.at n=30A341741
- Sorted positions of first appearances in A367905.at n=17A367911