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A058784
Number of n-rowed binary matrices with all row sums 5, up to row and column permutation; bipartite graphs with all nodes of degree 5 in a distinguished bipartite n-block, up to isomorphism.
9
1, 1, 6, 50, 1062, 56712, 7295812, 1817321457, 750572034647, 467477187494249, 413492386704135759, 498000976932085045800, 791133947048635010571251, 1616618616930983136958492360, 4162734189568898641317813946712, 13276910075946265356264268787123401
OFFSET
0,3
CROSSREFS
Row n=5 of A331461.
Sequence in context: A094072 A361193 A363315 * A008380 A196905 A066303
KEYWORD
nonn
AUTHOR
Vladeta Jovovic, Nov 28 2000
EXTENSIONS
a(7)-a(15) from Max Alekseyev, May 04 2018
STATUS
approved