1730861
domain: N
Appears in sequences
- Number of isomorphism classes of n-fold coverings of a connected graph with Betti number 4.at n=4A160446
- 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=40A160449
- Number of isomorphism classes of 5-fold coverings of a connected graph with Betti number n.at n=4A160454