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A031378 a(n) = prime(4*n - 2). 3
3, 13, 29, 43, 61, 79, 101, 113, 139, 163, 181, 199, 229, 251, 271, 293, 317, 349, 373, 397, 421, 443, 463, 491, 521, 557, 577, 601, 619, 647, 673, 701, 733, 757, 787, 821, 839, 863, 887, 929, 953, 983, 1013, 1033, 1061, 1091, 1109, 1151, 1181 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

A subsequence (more precisely, every other term) of A031215, subsequence of A007821 which is the complement of A006450 in the primes A000040. - M. F. Hasler, Oct 19 2013

LINKS

Ivan Panchenko, Table of n, a(n) for n = 1..1000

FORMULA

A031378(n) = A031215(2n-1) = A000040(2(2n-1)). - M. F. Hasler, Oct 19 2013

MATHEMATICA

Prime[4*Range[50]-2] (* Harvey P. Dale, Jun 03 2014 *)

PROG

(Magma) [ NthPrime(4*n-2): n in [1..1000] ]; // Vincenzo Librandi, Apr 11 2011

(PARI) A031378=n->prime(n*4-2) \\ M. F. Hasler, Oct 19 2013

CROSSREFS

Sequence in context: A041035 A042269 A049043 * A144391 A024836 A227541

Adjacent sequences: A031375 A031376 A031377 * A031379 A031380 A031381

KEYWORD

nonn

AUTHOR

Jeff Burch

STATUS

approved

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Last modified December 4 02:16 EST 2022. Contains 358544 sequences. (Running on oeis4.)