A259262 Fixed points in A083275.

4, 10, 15, 35, 116, 242, 396

Offset

1,1

Comments

Numbers n such that A083275(n) = n.

a(8) > 1200. - Giovanni Resta, Jun 23 2015

Links

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

Prog

(PARI) v=[3]; n=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. A083275.

Sequence in context: A360557 A005662 A337294 * A218211 A302197 A190965

Adjacent sequences: A259259 A259260 A259261 * A259263 A259264 A259265

Keyword

nonn,hard,more

Author

Derek Orr, Jun 22 2015

Extensions

a(7) from Giovanni Resta, Jun 23 2015

Status

approved