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A024472 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 = (F(2), F(3), ...). 0
1, 2, 9, 14, 35, 57, 127, 205, 420, 680, 1334, 2158, 4101, 6636, 12335, 19958, 36473, 59015, 106435, 172215, 307306, 497232, 879564, 1423164, 2499145, 4043702, 7057077 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..27.

FORMULA

Conjecture: G.f.: x*(-1-x-4*x^2-x^3+2*x^4) / ( (x^2-x-1) *(x^2+1) *(x^2+x-1)^2 ). - R. J. Mathar, Apr 27 2020

CROSSREFS

Sequence in context: A324275 A106360 A024470 * A279089 A128780 A178849

Adjacent sequences:  A024469 A024470 A024471 * A024473 A024474 A024475

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified July 25 03:53 EDT 2021. Contains 346283 sequences. (Running on oeis4.)