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A117748 Triangular numbers divisible by 3. 0
0, 3, 6, 15, 21, 36, 45, 66, 78, 105, 120, 153, 171, 210, 231, 276, 300, 351, 378, 435, 465, 528, 561, 630, 666, 741, 780, 861, 903, 990, 1035, 1128, 1176, 1275, 1326, 1431, 1485, 1596, 1653, 1770, 1830, 1953, 2016, 2145, 2211, 2346, 2415, 2556, 2628, 2775 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

CROSSREFS

Cf. A000217.

Sequence in context: A162335 A095869 A069559 * A061066 A093799 A087359

Adjacent sequences:  A117745 A117746 A117747 * A117749 A117750 A117751

KEYWORD

easy,nonn

AUTHOR

Luc Stevens (lms022(AT)yahoo.com), Apr 29 2006

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Last modified February 15 14:02 EST 2012. Contains 205811 sequences.