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Search: id:A117394
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| A117394 |
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Product of the first F(n) primes, where F(n) is the n-th Fibonacci number (F(0)=0, F(1)=1). |
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| 2, 2, 6, 30, 2310, 9699690, 304250263527210, 40729680599249024150621323470, 10014646650599190067509233131649940057366334653200433090, 16516447045902521732188973253623425320896207954043566485360902980990824644545340710198976591011245999110
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Next term has 191 digits. - Emeric Deutsch (deutsch(AT)duke.poly.edu), Apr 30 2006
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EXAMPLE
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a(4)=30 because the 4th Fibonacci number is 3 and the product of the first 3 primes is 2*3*5=30.
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MAPLE
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with(combinat): a:=n->mul(ithprime(i), i=1..fibonacci(n)): seq(a(n), n=1..10); - Emeric Deutsch (deutsch(AT)duke.poly.edu), Apr 30 2006
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CROSSREFS
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Sequence in context: A097801 A052584 A094303 this_sequence A003308 A032185 A002027
Adjacent sequences: A117391 A117392 A117393 this_sequence A117395 A117396 A117397
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KEYWORD
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easy,nonn
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AUTHOR
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Giovanni Teofilatto (g.teofilatto(AT)tiscalinet.it), Apr 25 2006
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EXTENSIONS
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More terms from Emeric Deutsch (deutsch(AT)duke.poly.edu), Apr 30 2006
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