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A076776 a(0) = 1, a(1) = 2, a(2) = 5; for n > 2, a(n) = a(n-1)*a(n-2). 1
1, 2, 5, 10, 50, 500, 25000, 12500000, 312500000000, 3906250000000000000, 1220703125000000000000000000000, 4768371582031250000000000000000000000000000000000 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..11.

FORMULA

a(n) = 2^fibonacci(n-2)*5^fibonacci(n-1)for n>=2, fibonacci(n)=A000045(n). - Vladeta Jovovic and Antonio G. Astudillo (afg_astudillo(AT)hotmail.com), Nov 16 2002

MAPLE

with(combinat, fibonacci):A076776 := n->2^fibonacci(n-2)*5^fibonacci(n-1);

CROSSREFS

Cf. A000045, A000301, A010098, A010099.

Sequence in context: A018472 A082593 A124664 * A020755 A018503 A018535

Adjacent sequences:  A076773 A076774 A076775 * A076777 A076778 A076779

KEYWORD

nonn

AUTHOR

Emily Shields (emilyshields_2001(AT)hotmail.com), Nov 14 2002

EXTENSIONS

More terms from Antonio G. Astudillo (afg_astudillo(AT)hotmail.com), Nov 16 2002

STATUS

approved

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Last modified September 22 17:04 EDT 2019. Contains 327311 sequences. (Running on oeis4.)