A074321 - OEIS

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A074321

Numbers n such that n-th perfect power + n is prime: n + A001597(n) is prime.

1, 3, 4, 6, 10, 13, 24, 25, 34, 37, 49, 50, 52, 73, 74, 93, 106, 109, 127, 142, 160, 177, 178, 193, 208, 212, 228, 234, 235, 250, 253, 262, 275, 276, 279, 281, 282, 284, 298, 333, 336, 337, 339, 360, 385, 402, 405, 407, 417, 442, 468, 474, 478, 480, 487

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OFFSET

1,2

COMMENTS

Primes of the form n + A001597(n) in A075781.

LINKS

Table of n, a(n) for n=1..55.

EXAMPLE

n=3: pp(3)+3=8+3=11 is prime.

CROSSREFS

Cf. A001597, A075781.

Sequence in context: A310002 A240577 A365614 * A253049 A167410 A302340

Adjacent sequences: A074318 A074319 A074320 * A074322 A074323 A074324

KEYWORD

easy,nonn

AUTHOR

Zak Seidov, Oct 11 2002

STATUS

approved