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1,2

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

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

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

Subsequence of A064370 (gives a square).

Sequence in context: A199948 A261382 A225221 * A109119 A002495 A242109

Adjacent sequences: A114064 A114065 A114066 * A114068 A114069 A114070

nonn

Giovanni Resta, Feb 13 2006

approved