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A011884 [ n(n-1)/31 ]. 0
0, 0, 0, 0, 0, 0, 0, 1, 1, 2, 2, 3, 4, 5, 5, 6, 7, 8, 9, 11, 12, 13, 14, 16, 17, 19, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 45, 47, 50, 52, 55, 58, 61, 63, 66, 69, 72, 75, 79, 82, 85, 88, 92, 95, 99, 102, 106, 110 (list; graph; refs; listen; history; internal format)
OFFSET

0,10

CROSSREFS

Sequence in context: A064317 A127037 A089646 * A029070 A112341 A183003

Adjacent sequences:  A011881 A011882 A011883 * A011885 A011886 A011887

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified February 15 16:28 EST 2012. Contains 205823 sequences.