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 A061068 Primes which are the sum of a prime and its subscript. 26
 3, 5, 11, 19, 79, 101, 113, 127, 163, 173, 223, 271, 383, 419, 431, 503, 571, 599, 619, 641, 659, 673, 683, 701, 733, 757, 827, 863, 971, 1013, 1033, 1087, 1193, 1249, 1423, 1433, 1453, 1483, 1579, 1621, 1667, 1723, 2003, 2113, 2179, 2287, 2381, 2459, 2467 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS a(n) = A061067(n-1) + A064402(n). - Leroy Quet, Jun 30 2006 This sequence is the intersection of A014688 with the set of primes. Conjecture: this sequence is infinite, yet derives from arbitrarily long "prime deserts" such as the 11 composites in A014688 between a(6) = 19 and a(18) = 79 and the 17 composites in A014688 between a(48) = 271 and a(66) = 383. - Jonathan Vos Post, Nov 22 2004 Primes not of the form n + pi(n-1). - Thomas Ordowski, Sep 21 2013 Except for the first pair (3, 5) no two consecutive primes are terms of the sequence. - Zak Seidov, Nov 10 2013 LINKS T. D. Noe, Table of n, a(n) for n=1..1000 EXAMPLE 5th term is 79=61+18=prime(18)+18. MATHEMATICA Select[Range[500], PrimeQ[Prime[ # ] + # ] &] + Prime[Select[Range[500], PrimeQ[Prime[ # ] + # ] &]] (* Stefan Steinerberger, Jul 21 2006 *) PROG (PARI) { n=0; m=0; forprime (p=2, 109567, if (isprime(p + m++), write("b061068.txt", n++, " ", p + m)) ) } [Harry J. Smith, Jul 17 2009] CROSSREFS Cf. A061067, A064402. Sequence in context: A147189 A118744 A092672 * A263925 A328660 A058932 Adjacent sequences:  A061065 A061066 A061067 * A061069 A061070 A061071 KEYWORD nonn AUTHOR Labos Elemer, May 28 2001 EXTENSIONS Edited by N. J. A. Sloane, Apr 29 2007 Definition clarified by Jonathan Sondow, Jul 12 2012 STATUS approved

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Last modified July 30 12:39 EDT 2021. Contains 346359 sequences. (Running on oeis4.)