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Search: id:A086803
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| A086803 |
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a(n) = Product_{i=2..n} (prime(n+1)-prime(i)). |
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+0
1
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| 1, 6, 40, 1728, 10560, 604800, 4386816, 348364800, 76859228160, 490311843840, 172454510592000, 6951148594790400, 54188395462656000, 5673488083845120000, 2112698895984230400000, 458667310457770160947200
(list; graph; listen)
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OFFSET
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1,2
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FORMULA
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(3-2)=1, (5-2)*(5-3)=6, (7-2)*(7-3)*(7-5)=40, ...
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PROGRAM
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(PARI) fnpr(n)=forprime(x=3, n, pr=1; forprime(y=2, x-1, pr=pr*(x-y)); print1(pr", "))
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CROSSREFS
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Sequence in context: A001367 A096671 A012856 this_sequence A136382 A096716 A000611
Adjacent sequences: A086800 A086801 A086802 this_sequence A086804 A086805 A086806
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KEYWORD
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easy,nonn
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AUTHOR
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Cino Hilliard (hillcino368(AT)gmail.com), Aug 05 2003
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