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A157132 Factorial of primes divided by prime numbers' respective places in the sequence of primes. 1
2, 3, 40, 1260, 7983360, 1037836800, 50812489728000, 15205637551104000, 2872446304320552960000, 884176199373970195454361600000, 747530786743447528884142080000000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..11.

FORMULA

a(n) = prime(n)!/n.

EXAMPLE

E.g. leading term = 2!/1 = 2, second term = 3!/2 = 3, third term = 5!/3 = 40, etc.

MATHEMATICA

Table[Prime[n]!/n, {n, 20}] (* Harvey P. Dale, May 24 2017 *)

PROG

(PARI) a(n) = prime(n)!/n; \\ Michel Marcus, Aug 19 2013

CROSSREFS

Terms of A039716 divided by sequence of natural numbers A000027

Cf. A177946. [From Reinhard Zumkeller, May 15 2010]

Sequence in context: A097170 A231797 A176366 * A262189 A077336 A242174

Adjacent sequences:  A157129 A157130 A157131 * A157133 A157134 A157135

KEYWORD

easy,nonn

AUTHOR

Jeremy Cahill (jcahill(AT)inbox.com), Feb 23 2009

STATUS

approved

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Last modified April 25 12:04 EDT 2019. Contains 322456 sequences. (Running on oeis4.)