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A051901 Minimal factorial safe-primes: a p=a[n] here if (p-1)/n! = A051888[n]. 0
3, 5, 13, 73, 241, 2161, 15121, 282241, 1088641, 10886401, 199584001, 958003201, 18681062401, 1133317785601, 9153720576001, 648606486528001, 1778437140480001, 12804747411456001, 851515702861824001 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

FORMULA

a[n] = 1+n!*A051888[n]=1+A000142[n]*A051888[n]

EXAMPLE

a[8]= 282241 = 8!*A051888[8]= 40320*7+1

CROSSREFS

A005385, A051888, A000142.

Sequence in context: A144718 A066141 A159293 * A018928 A180313 A053630

Adjacent sequences:  A051898 A051899 A051900 * A051902 A051903 A051904

KEYWORD

nonn

AUTHOR

Labos E. (labos(AT)ana.sote.hu), Dec 16 1999

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Last modified February 18 00:14 EST 2012. Contains 206085 sequences.