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A067643
Column 3 of table in A067640.
1
70, 2352, 47820, 784672, 11515714, 158295072, 2086803540, 26737722400, 335676172480, 4150940757440, 50739269522864, 614607881444256, 7390867767651290
OFFSET
0,1
CROSSREFS
Sequence in context: A163022 A271031 A006437 * A285170 A017786 A035730
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Feb 05 2002
STATUS
approved