A228529 - OEIS

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A228529

a(n) = prime(n*prime(n)).

1

3, 13, 47, 107, 257, 397, 653, 881, 1279, 1889, 2293, 3119, 3847, 4423, 5323, 6563, 7937, 8819, 10391, 11833, 12889, 14831, 16477, 18713, 21599, 23603, 25189, 27409, 29063, 31511, 37159, 39869, 43321, 45589, 50923, 53281, 57271, 61561, 65173, 69821, 74383

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OFFSET

1,1

LINKS

Table of n, a(n) for n=1..41.

FORMULA

a(n) = A000040(A033286(n)).

EXAMPLE

For n = 2, prime(2*prime(2)) = prime(2*3) = prime(6) = 13, so a(2) = 13.

MATHEMATICA

Table[Prime[n*Prime[n]], {n, 100}] (* T. D. Noe, Oct 22 2013 *)

PROG

(PARI) a(n) = prime(n*prime(n)); \\ Michel Marcus, Oct 22 2013

CROSSREFS

Cf. A000040, A006450, A033286, A036689, A080697, A217622, A230098, A230325, A230285, A230460.

Sequence in context: A017943 A220117 A089930 * A084519 A304628 A265920

Adjacent sequences: A228526 A228527 A228528 * A228530 A228531 A228532

KEYWORD

nonn

AUTHOR

Omar E. Pol, Oct 20 2013

STATUS

approved