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A024858 a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = (natural numbers), t = (Lucas numbers). 0
3, 4, 15, 25, 61, 98, 203, 329, 622, 1006, 1802, 2916, 5047, 8166, 13821, 22363, 37291, 60338, 99619, 161187, 264348, 427724, 698324, 1129912, 1839195, 2975880, 4834171, 7821853 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,1

LINKS

Table of n, a(n) for n=2..29.

FORMULA

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

CROSSREFS

Sequence in context: A086826 A081405 A167367 * A293047 A135100 A205485

Adjacent sequences: A024855 A024856 A024857 * A024859 A024860 A024861

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified February 8 09:49 EST 2023. Contains 360138 sequences. (Running on oeis4.)