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A058783
Number of n-rowed binary matrices with all row sums 4, up to row and column permutation; bipartite graphs with all nodes of degree 4 in a distinguished bipartite n-block, up to isomorphism.
10
1, 1, 5, 30, 332, 6414, 226041, 12848128, 1064292052, 119252205304, 17239075745190, 3113843614322530, 686491853010870156, 181386885029173595218, 56595769613704915215101, 20597536264356706999502705, 8652615103513713632218678155, 4157673185369121151936091009448
OFFSET
0,3
CROSSREFS
Row n=4 of A331461.
Sequence in context: A276752 A380607 A052172 * A203769 A264861 A264864
KEYWORD
nonn
AUTHOR
Vladeta Jovovic, Nov 28 2000
EXTENSIONS
Terms a(8)-a(17) from Max Alekseyev, May 04 2018
STATUS
approved