A221637 Numbers n such that (15^n + 14^n)/29 is prime.

3, 127, 227, 1009, 1951, 5101, 14011

Offset

1,1

Comments

All terms are prime.

a(8) > 10^5.

Links

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

Mathematica

Select[ Prime[ Range[1, 100000] ], PrimeQ[ (15^# + 14^#)/29 ]& ]

Prog

(PARI) is(n)=ispseudoprime((15^n+14^n)/29) \\ Charles R Greathouse IV, Feb 20 2017

Crossrefs

Cf. A057180, A128072, A128343, A181141, A187819, A217095, A185239, A213216, A225191, A225097.

Sequence in context: A086154 A133122 A139936 * A142007 A339084 A071151

Adjacent sequences: A221634 A221635 A221636 * A221638 A221639 A221640

Keyword

hard,nonn,more

Author

Robert Price, May 28 2013

Status

approved