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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).
0
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
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
KEYWORD
nonn
STATUS
approved