A024589 s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n+1-k), where k = [ (n+1)/2 ], s = (composite numbers), t = (F(2), F(3), ...).

4, 8, 24, 38, 86, 140, 271, 438, 789, 1277, 2222, 3595, 6111, 9888, 16509, 26712, 44101, 71357, 117060, 189407, 309347, 500534, 814774, 1318332, 2141400, 3464858, 5620898, 9094804

Offset

1,1

Links

Table of n, a(n) for n=1..28.

Crossrefs

Sequence in context: A075708 A066617 A272272 * A062015 A006640 A212686

Adjacent sequences: A024586 A024587 A024588 * A024590 A024591 A024592

Keyword

nonn

Author

Clark Kimberling

Status

approved