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A008238 floor(n/4)*ceil(n/4). 0
0, 0, 0, 0, 1, 2, 2, 2, 4, 6, 6, 6, 9, 12, 12, 12, 16, 20, 20, 20, 25, 30, 30, 30, 36, 42, 42, 42, 49, 56, 56, 56, 64, 72, 72, 72, 81, 90, 90, 90, 100, 110, 110, 110, 121, 132, 132, 132, 144, 156, 156, 156, 169, 182, 182 (list; graph; refs; listen; history; internal format)
OFFSET

0,6

MATHEMATICA

f[n_]:=Module[{c=n/4}, Floor[c]Ceiling[c]]; f/@Range[0, 70]  (* From Harvey P. Dale, Apr 23 2011 *)

CROSSREFS

Sequence in context: A086420 A170887 A103265 * A096575 A002722 A093393

Adjacent sequences:  A008235 A008236 A008237 * A008239 A008240 A008241

KEYWORD

nonn

AUTHOR

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

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Last modified February 14 11:36 EST 2012. Contains 205623 sequences.