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A025070 a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = A023532, t = (composite numbers). 0
6, 8, 9, 10, 21, 24, 37, 42, 47, 51, 69, 75, 96, 102, 126, 135, 142, 150, 178, 187, 217, 227, 259, 272, 307, 319, 332, 345, 385, 401, 443, 457, 503, 522, 568, 587, 636, 656, 675, 693, 747, 769, 825, 847, 906, 929, 991, 1016, 1079, 1105, 1172, 1201, 1230, 1256, 1324, 1354 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..56.

CROSSREFS

Sequence in context: A175821 A074845 A001746 * A123704 A045574 A074284

Adjacent sequences:  A025067 A025068 A025069 * A025071 A025072 A025073

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified August 20 20:50 EDT 2019. Contains 326155 sequences. (Running on oeis4.)