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A271874 Smallest base-n Fermat pseudoprime with n distinct prime factors. 1
341, 286, 11305, 2203201, 12306385 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,1

COMMENTS

Main diagonal of A271873.

LINKS

Table of n, a(n) for n=2..6.

EXAMPLE

a(4) = 11305, since 11305 is the smallest term x of A020136 such that A001221(x) = 4.

PROG

(PARI) a(n) = forcomposite(c=1, , if(Mod(n, c)^(c-1)==1, if(omega(c)==n, return(c))))

CROSSREFS

Cf. A001221, A020136, A271873.

Sequence in context: A271801 A322120 A250199 * A025335 A025327 A101852

Adjacent sequences:  A271871 A271872 A271873 * A271875 A271876 A271877

KEYWORD

nonn,more

AUTHOR

Felix Fröhlich, Apr 16 2016

STATUS

approved

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Last modified April 8 04:26 EDT 2020. Contains 333312 sequences. (Running on oeis4.)