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A099085
A bisection of A006966.
0
1, 1, 2, 15, 222, 5994, 262776, 16873364, 1471613387, 165269824761
OFFSET
0,3
CROSSREFS
Sequence in context: A178533 A087962 A140054 * A078365 A207037 A218798
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Nov 15 2004
STATUS
approved