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Search: id:A011871
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A011871 [ n(n-1)/18 ]. +0
1
0, 0, 0, 0, 0, 1, 1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 13, 15, 17, 19, 21, 23, 25, 28, 30, 33, 36, 39, 42, 45, 48, 51, 55, 58, 62, 66, 70, 74, 78, 82, 86, 91, 95, 100, 105, 110, 115, 120, 125, 130, 136, 141, 147, 153, 159 (list; graph; listen)
OFFSET

0,8

CROSSREFS

Sequence in context: A049810 A132018 A044919 this_sequence A130676 A039227 A039273

Adjacent sequences: A011868 A011869 A011870 this_sequence A011872 A011873 A011874

KEYWORD

nonn

AUTHOR

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

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.


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