A114067 The n-th prime minus n gives a fourth power.

1, 2, 2603, 4485, 2894125, 8422110, 16832512, 17322137, 20485427, 32550001, 34980568, 49197457, 58325415

Offset

1,2

Links

Table of n, a(n) for n=1..13.

Example

p(32550001)-32550001 = 236421376 = 592240896 = 156^4.

Prog

(PARI) isok(n) = ispower(prime(n) - n, 4); \\ Michel Marcus, Jan 22 2014

Crossrefs

Subsequence of A064370 (gives a square).

Sequence in context: A225221 A347654 A324426 * A109119 A002495 A353126

Adjacent sequences: A114064 A114065 A114066 * A114068 A114069 A114070

Keyword

nonn

Author

Giovanni Resta, Feb 13 2006

Status

approved