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.
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.
Terms
- a(0) =1a(1) =1a(2) =5a(3) =30a(4) =332a(5) =6414a(6) =226041a(7) =12848128a(8) =1064292052a(9) =119252205304
External references
- oeis: A058783