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A025115 a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = (odd natural numbers), t = A023533. 0
0, 0, 1, 3, 5, 0, 0, 0, 1, 3, 5, 7, 9, 11, 13, 15, 17, 0, 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 32, 36, 40, 44, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, 44, 48, 52, 56, 60, 64, 68, 72, 76, 80, 84, 88, 92, 27, 29, 31, 33, 35, 37, 39, 41, 43, 45, 47, 49, 51, 53 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

Table of n, a(n) for n=1..81.

CROSSREFS

Sequence in context: A161838 A152624 A059107 * A230424 A113037 A063866

Adjacent sequences:  A025112 A025113 A025114 * A025116 A025117 A025118

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified September 2 08:04 EDT 2014. Contains 246326 sequences.