A086803 - OEIS

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A086803

a(n) = Product_{i=2..n} (prime(n+1)-prime(i)).

1, 6, 40, 1728, 10560, 604800, 4386816, 348364800, 76859228160, 490311843840, 172454510592000, 6951148594790400, 54188395462656000, 5673488083845120000, 2112698895984230400000, 458667310457770160947200

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

LINKS

Table of n, a(n) for n=1..16.

FORMULA

(3-2)=1, (5-2)*(5-3)=6, (7-2)*(7-3)*(7-5)=40, ...

PROG

(PARI) fnpr(n)=forprime(x=3, n, pr=1; forprime(y=2, x-1, pr=pr*(x-y)); print1(pr", "))

CROSSREFS

Sequence in context: A001367 A096671 A196712 * A136382 A096716 A354331

Adjacent sequences: A086800 A086801 A086802 * A086804 A086805 A086806

KEYWORD

easy,nonn

AUTHOR

Cino Hilliard, Aug 05 2003

STATUS

approved