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 A093502 a(1) = 2; for n > 0, a(n+1) is the a(n)-th prime after a(n). 0
 2, 5, 19, 103, 733, 6691, 76831, 1081429, 18242699, 361919671, 8309068723, 217809953467, 6445388418589, 213232943658197, 7821073506524401, 315743571062703689 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS FORMULA a(n) = prime(pi(a(n-1)) + a(n-1)). - Vladeta Jovovic, Jun 19 2004 a(1)=2, a(n) = next a(n-1)th prime after a(n-1). - Zak Seidov, Mar 21 2009 a(n+1) = A000040(a(n) + index of a(n) in A000040). - David James Sycamore, Aug 20 2017 EXAMPLE 19 follows 5 as there are 5 primes > 5 and up to 19 inclusive, (7,11,13,17,19). MATHEMATICA a[1] := 2; a[n_] := Prime[PrimePi[a[n - 1]] + a[n - 1]]; Table[a[n], {n, 1, 10}] (* Stefan Steinerberger, Apr 10 2006 *) NestList[Prime[PrimePi[ # ] + # ] &, 2, 13] (* Zak Seidov, Mar 21 2009 *) PROG (Python) from sympy import prime p, q = 2, 1 A093502_list = [p] for _ in range(15):     r = p + q     p, q = prime(r), r     A093502_list.append(p) # Chai Wah Wu, Jun 17 2019 CROSSREFS Sequence in context: A020117 A054687 A076669 * A009311 A211207 A107882 Adjacent sequences:  A093499 A093500 A093501 * A093503 A093504 A093505 KEYWORD more,nonn AUTHOR Amarnath Murthy, Apr 17 2004 EXTENSIONS a(10) from Vladeta Jovovic, Jun 19 2004 More terms from Stefan Steinerberger, Apr 10 2006 a(13) from Zak Seidov, Mar 21 2009 a(14)-a(15) from Donovan Johnson, Dec 08 2009 Better definition from Jon E. Schoenfield, Aug 22 2017 a(16) from Chai Wah Wu, Jun 17 2019 STATUS approved

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Last modified November 26 09:38 EST 2020. Contains 338639 sequences. (Running on oeis4.)