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A259261 Fixed points in A073673. 0
1, 2, 3, 13, 39, 55, 527 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Numbers n such that A073673(n) = n.

a(8) > 750. - R. J. Mathar, Jul 14 2015

LINKS

Table of n, a(n) for n=1..7.

PROG

(PARI) v=[1]; n=1; print1(1, ", "); while(#v<300, s=1+n*prod(i=1, #v, v[i]); if(ispseudoprime(s)&&!vecsearch(vecsort(v), n), v=concat(v, n); if(n==#v, print1(n, ", ")); n=0); n++)

CROSSREFS

Cf. A073673.

Sequence in context: A168483 A100424 A289549 * A141511 A235615 A117528

Adjacent sequences:  A259258 A259259 A259260 * A259262 A259263 A259264

KEYWORD

nonn,more,hard

AUTHOR

Derek Orr, Jun 22 2015

STATUS

approved

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Last modified December 11 18:19 EST 2019. Contains 329925 sequences. (Running on oeis4.)