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Search: id:A024857
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A024857 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 = (Fibonacci numbers). +0
2
1, 2, 7, 11, 27, 44, 91, 147, 278, 450, 806, 1304, 2257, 3652, 6181, 10001, 16677, 26984, 44551, 72085, 118220, 191284, 312300, 505312, 822513, 1330854, 2161907, 3498039, 5674751, 9181940 (list; graph; listen)
OFFSET

2,2

COMMENT

Essentially the same as A023864 with different indexing.

FORMULA

G.f.:(-1-x^5-2*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: A023862 A024479 A023864 this_sequence A024481 A024591 A073602

Adjacent sequences: A024854 A024855 A024856 this_sequence A024858 A024859 A024860

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified December 20 16:54 EST 2009. Contains 171081 sequences.


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