601055

Appears in sequences

• Number of equivalence classes of n X n matrices over {0,1} with rows and columns summing to 5, where equivalence is defined by row and column permutations. Isomorphism classes of bicolored 5-regular bipartite graphs, where isomorphism cannot exchange the colors.at n=9A000516
• Triangle with number of equivalence classes of n X n matrices over {0,1} with rows and columns summing to k (0<=k<=n), where equivalence is defined by row and column permutations.at n=60A133687
• Number of inequivalent 2n X 2n binary matrices with rows and columns summing to n, where equivalence means permutations of rows or columns.at n=5A333740
• Number of inequivalent 2*n X 10 binary arrays with row sums 5 and column sums n up to row and column permutations.at n=5A377005
• Array read by antidiagonals: T(n,k) is the number of inequivalent 2*n X 2*k binary matrices with all row sums k and column sums n up to permutations of rows and columns.at n=60A377007