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A038715 Floor(n/4)*ceiling((n+2)/4). +0
1
0, 0, 0, 0, 2, 2, 2, 3, 6, 6, 6, 8, 12, 12, 12, 15, 20, 20, 20, 24, 30, 30, 30, 35, 42, 42, 42, 48, 56, 56, 56, 63, 72, 72, 72, 80, 90, 90, 90, 99, 110, 110, 110, 120, 132, 132, 132, 143, 156, 156, 156, 168, 182, 182, 182, 195, 210, 210, 210, 224, 240 (list; graph; listen)
OFFSET

0,5

CROSSREFS

Sequence in context: A104346 A109906 A104856 this_sequence A057040 A096235 A147851

Adjacent sequences: A038712 A038713 A038714 this_sequence A038716 A038717 A038718

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), May 02 2000

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Last modified December 1 19:22 EST 2009. Contains 167811 sequences.


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