A025083 a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = (Fibonacci numbers), t = (odd natural numbers).

3, 5, 12, 16, 34, 42, 77, 91, 160, 184, 312, 352, 587, 653, 1076, 1184, 1938, 2114, 3445, 3731, 6064, 6528, 10592, 11344, 18387, 19605, 31756, 33728, 54610, 57802, 93565, 98731, 159792, 168152, 272120, 285648, 462235, 484125, 783380, 818800, 1324898, 1382210

Offset

1,1

Links

Table of n, a(n) for n=1..42.

Formula

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

Crossrefs

Sequence in context: A057587 A213036 A032438 * A203150 A237351 A299490

Adjacent sequences: A025080 A025081 A025082 * A025084 A025085 A025086

Keyword

nonn

Author

Clark Kimberling

Status

approved