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A131308 Alternate A001477 and tripled 2*A000027. 0
0, 2, 2, 2, 1, 4, 4, 4, 2, 6, 6, 6, 3, 8, 8, 8, 4, 10, 10, 10, 5, 12, 12, 12, 6, 14, 14, 14, 7, 16, 16, 16, 8, 18, 18, 18, 9, 20, 20, 20, 10, 22, 22, 22, 11, 24, 24, 24, 12, 26, 26, 26, 13, 28, 28, 28, 14, 30, 30, 30, 15, 32, 32, 32, 16, 34, 34, 34, 17, 36, 36, 36, 18, 38, 38, 38, 19 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..76.

CROSSREFS

Sequence in context: A014572 A071458 A247719 * A184242 A109978 A114293

Adjacent sequences:  A131305 A131306 A131307 * A131309 A131310 A131311

KEYWORD

nonn

AUTHOR

Paul Curtz, Sep 29 2007

STATUS

approved

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Last modified October 25 07:15 EDT 2014. Contains 248518 sequences.