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A013322 All terms are triangular numbers; a(n) is length of n-th run. 0
1, 3, 3, 3, 6, 6, 6, 10, 10, 10, 15, 15, 15, 15, 15, 15, 21, 21, 21, 21, 21, 21, 28, 28, 28, 28, 28, 28, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 55, 55, 55, 55, 55, 55, 55, 55, 55, 55, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66, 66 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

CROSSREFS

Sequence in context: A171601 A057944 A080607 * A177821 A166273 A058675

Adjacent sequences:  A013319 A013320 A013321 * A013323 A013324 A013325

KEYWORD

nonn,easy

AUTHOR

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

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Last modified February 15 21:45 EST 2012. Contains 205860 sequences.