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A038714 Floor(n/4)*ceiling((n+1)/4). 0
0, 0, 0, 0, 2, 2, 2, 2, 6, 6, 6, 6, 12, 12, 12, 12, 20, 20, 20, 20, 30, 30, 30, 30, 42, 42, 42, 42, 56, 56, 56, 56, 72, 72, 72, 72, 90, 90, 90, 90, 110, 110, 110, 110, 132, 132, 132, 132, 156, 156, 156, 156, 182, 182, 182, 182, 210, 210, 210, 210, 240 (list; graph; refs; listen; history; internal format)
OFFSET

0,5

CROSSREFS

Sequence in context: A116863 A136494 A048764 * A139554 A116564 A078014

Adjacent sequences:  A038711 A038712 A038713 * A038715 A038716 A038717

KEYWORD

nonn

AUTHOR

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

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Last modified February 16 21:17 EST 2012. Contains 205971 sequences.