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A162124
Number of n X n binary arrays with rows and columns, considered as graycode numbers, in strictly increasing order, and no more than 7 ones in any row or column
0
2, 4, 25, 408, 18003, 2289232, 851979730, 906147342695, 2499603894160970
OFFSET
1,1
CROSSREFS
Sequence in context: A162121 A162122 A162123 * A162125 A162126 A162118
KEYWORD
nonn
AUTHOR
R. H. Hardin Jun 25 2009
STATUS
approved