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A024860 a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = (natural numbers), t = (composite numbers). 0
6, 8, 25, 28, 59, 68, 119, 136, 211, 234, 338, 366, 502, 543, 715, 770, 981, 1042, 1297, 1365, 1667, 1752, 2104, 2208, 2615, 2726, 3191, 3325, 3854, 4013, 4610, 4797, 5466, 5682, 6426, 6654, 7477, 7716, 8620, 8889, 9878, 10181, 11261, 11600, 12774, 13150, 14422 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,1

LINKS

Table of n, a(n) for n=2..48.

CROSSREFS

Sequence in context: A119875 A053189 A156231 * A025100 A155478 A219191

Adjacent sequences: A024857 A024858 A024859 * A024861 A024862 A024863

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified February 1 20:24 EST 2023. Contains 359995 sequences. (Running on oeis4.)