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A024471 a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n+1-k), where k = [ (n+1)/2 ], s = (Lucas numbers), t = (composite numbers). 0
4, 6, 26, 33, 69, 78, 153, 175, 311, 356, 613, 682, 1143, 1235, 2045, 2216, 3635, 3965, 6470, 6945, 11298, 11903, 19324, 20392, 33064, 35025, 56745, 59156, 95797, 99911, 161744, 168949, 273456, 286547, 463737, 488666, 790777, 825796, 1336269, 1379002 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..40.

CROSSREFS

Sequence in context: A176858 A182333 A028273 * A075277 A192874 A159557

Adjacent sequences:  A024468 A024469 A024470 * A024472 A024473 A024474

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified July 28 10:51 EDT 2021. Contains 346326 sequences. (Running on oeis4.)