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A259261
Fixed points in
A073673
.
0
1, 2, 3, 13, 39, 55, 527, 776, 910, 942
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OFFSET
1,2
COMMENTS
Numbers k such that
A073673
(k) = k.
a(8) > 750. -
R. J. Mathar
, Jul 14 2015
LINKS
Table of n, a(n) for n=1..10.
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:
A100424
A347537
A289549
*
A141511
A235615
A117528
Adjacent sequences:
A259258
A259259
A259260
*
A259262
A259263
A259264
KEYWORD
nonn
,
more
,
hard
AUTHOR
Derek Orr
, Jun 22 2015
EXTENSIONS
a(8)-a(10) from
Michael S. Branicky
, May 19 2023
STATUS
approved
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Last modified March 29 04:23 EDT 2024. Contains 371264 sequences. (Running on oeis4.)