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A023869 a(n) = s(1)t(n)+s(2)t(n-1)+...+s(k)t(n+1-k), where k=[ (n+1)/2 ], s = (natural numbers), t is A014306. 0
0, 1, 3, 2, 4, 3, 6, 10, 15, 14, 19, 18, 24, 23, 30, 29, 37, 36, 45, 54, 64, 63, 74, 73, 85, 84, 97, 96, 110, 109, 124, 123, 139, 138, 154, 152, 169, 167, 185, 204, 224, 223, 244, 243, 265, 264, 287, 286, 310, 309, 334, 333, 359, 358, 385, 383, 410, 408, 436, 434, 463, 461, 491, 489 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..64.

CROSSREFS

Sequence in context: A294145 A024856 A147598 * A024596 A262610 A175508

Adjacent sequences:  A023866 A023867 A023868 * A023870 A023871 A023872

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified March 25 03:50 EDT 2019. Contains 321450 sequences. (Running on oeis4.)