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A246152
Number of inequivalent n X 7 binary matrices, where equivalence means permutations of rows or columns or the symbol set.
1
1, 4, 40, 367, 4745, 68379, 1072086, 16821330, 254092124, 3608247685, 47733362102, 587016912645, 6721970343643, 71907225898320, 721352899257954, 6812732993272120, 60802368520799533, 514586622373193034, 4143078743506122930, 31825800605751740274
OFFSET
0,2
CROSSREFS
Column k=7 of A242093.
Sequence in context: A222273 A220366 A220310 * A155641 A122652 A299867
KEYWORD
nonn
AUTHOR
Alois P. Heinz, Aug 17 2014
STATUS
approved