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A144613 A000203(3*n). 3
0, 4, 12, 13, 28, 24, 39, 32, 60, 40, 72, 48, 91, 56, 96, 78, 124, 72, 120, 80, 168, 104, 144, 96, 195, 124, 168, 121, 224, 120, 234, 128, 252, 156, 216, 192, 280, 152, 240, 182, 360, 168, 312, 176, 336, 240, 288, 192, 403, 228, 372, 234, 392, 216, 363, 288, 480, 260, 360 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

PROG

(PARI) vector(66, n, sigma(3*n, 1)) /* Joerg Arndt, Jul 30 2011 */

CROSSREFS

Sequence in context: A103053 A087760 A032498 * A031330 A052339 A123076

Adjacent sequences:  A144610 A144611 A144612 * A144614 A144615 A144616

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), Jan 15 2009

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Last modified February 15 05:45 EST 2012. Contains 205694 sequences.