login
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
OFFSET
2,1
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
KEYWORD
nonn
STATUS
approved