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A355334
Triangle read by rows: T(n,k) is the number of unlabeled graphs with n nodes and bipartite dimension (or biclique covering number) k, 0 <= k < n.
3
1, 1, 1, 1, 2, 1, 1, 4, 6, 0, 1, 6, 20, 7, 0, 1, 9, 61, 80, 5, 0, 1, 12, 159, 650, 221, 1, 0, 1, 16, 381, 4710, 6866, 372, 0, 0, 1, 20, 832, 29921, 183618, 59950, 326, 0, 0
OFFSET
1,5
EXAMPLE
Triangle begins:
n\k | 0 1 2 3 4 5 6 7 8
----+--------------------------------------
1 | 1
2 | 1 1
3 | 1 2 1
4 | 1 4 6 0
5 | 1 6 20 7 0
6 | 1 9 61 80 5 0
7 | 1 12 159 650 221 1 0
8 | 1 16 381 4710 6866 372 0 0
9 | 1 20 832 29921 183618 59950 326 0 0
CROSSREFS
Cf. A000088 (row sums), A355333, A355335, A355336.
Columns: A000012 (k=0), A002620 (k=1).
Sequence in context: A143392 A090668 A307977 * A295259 A255009 A156579
KEYWORD
nonn,tabl,more
AUTHOR
STATUS
approved