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A071308 1/2 number of n X n 0..9 matrices with MM' mod 10 = I. 0
1, 8, 720, 691200, 6739200000 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

CROSSREFS

Sequence in context: A168130 A037076 A116245 * A046188 A014387 A017007

Adjacent sequences:  A071305 A071306 A071307 * A071309 A071310 A071311

KEYWORD

nonn

AUTHOR

R. H. Hardin (rhhardin(AT)att.net), Jun 11 2002

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Last modified February 14 15:32 EST 2012. Contains 205635 sequences.