524137

Appears in sequences

• Ranks of certain relations among Euler sums of weight n.at n=18A038360
• Number of isomorphism classes of n-fold coverings of a connected graph with Betti number 3.at n=5A152612
• Array read by antidiagonals: T(n,k) is the number of isomorphism classes of n-fold coverings of a connected graph with Betti number k (1 <= n, 0 <= k).at n=39A160449
• Number of isomorphism classes of 6-fold coverings of a connected graph with Betti number n.at n=3A176709
• a(n) = 2^(n-5) - A000931(n).at n=19A216714
• Number of (undirected) cycles on the n X 2 king graph.at n=14A339196