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A161208 a(n) = (A161206(n+1)-1)/2. 1
0, 1, 3, 6, 10, 15, 21, 28, 34, 40, 49, 61, 76, 91, 105, 120, 130, 136 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..17.

CROSSREFS

Cf. A161206, A161207, A161209.

Sequence in context: A054636 A231680 A124158 * A109444 A124157 A033440

Adjacent sequences:  A161205 A161206 A161207 * A161209 A161210 A161211

KEYWORD

more,nonn

AUTHOR

Omar E. Pol, Jun 08 2009

STATUS

approved

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Last modified February 16 12:48 EST 2019. Contains 320163 sequences. (Running on oeis4.)