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A024473 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 = (odd natural numbers). 0
1, 3, 14, 22, 50, 66, 131, 161, 290, 342, 592, 680, 1145, 1291, 2142, 2382, 3914, 4306, 7035, 7673, 12490, 13526, 21968, 23648, 38353, 41075, 66558, 70966, 114930, 122066, 197619, 209169, 338562, 357254, 578176, 608424, 984585, 1033531, 1672430, 1751630, 2834346 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..41.

FORMULA

G.f.:(1-6*x^7+2*x^6-7*x^5+x^4-5*x^3+7*x^2+x)/((x-1)^2*(x^4+x^2-1)^2) [From Maksym Voznyy (voznyy(AT)mail.ru), Jul 27 2009]

CROSSREFS

Sequence in context: A258218 A255219 A226341 * A024598 A019001 A034103

Adjacent sequences:  A024470 A024471 A024472 * A024474 A024475 A024476

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified February 26 00:08 EST 2020. Contains 332270 sequences. (Running on oeis4.)