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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
OFFSET
2,1
CROSSREFS
Sequence in context: A119875 A053189 A156231 * A025100 A155478 A219191
KEYWORD
nonn
STATUS
approved