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 A057453 Prime recurrence: a(n+1) = a(n)-th prime, with a(1) = 9. 9
 9, 23, 83, 431, 3001, 27457, 318211, 4535189, 77557187, 1559861749, 36294260117, 963726515729, 28871271685163, 966399998477597, 35843152090509943, 1462429366668283501 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Lubomir Alexandrov informs me that he studied this sequence in his 1965 notebook. - N. J. A. Sloane, May 23 2008 LINKS Table of n, a(n) for n=1..16. Lubomir Alexandrov, Prime Number Sequences And Matrices Generated By Counting Arithmetic Functions, Communications of the Joint Institute of Nuclear Research, E5-2002-55, Dubna, 2002. MATHEMATICA NestList[ Prime, 9, 12 ] PROG (Python) from sympy import prime from itertools import accumulate def anext(an, _): return prime(an) print(list(accumulate([9]*10, anext))) # Michael S. Branicky, Sep 23 2021 CROSSREFS Cf. A007097. Sequence in context: A211478 A147420 A259170 * A282761 A232612 A339439 Adjacent sequences: A057450 A057451 A057452 * A057454 A057455 A057456 KEYWORD nonn,hard,more AUTHOR Robert G. Wilson v, Sep 26 2000 EXTENSIONS a(14)-a(16) from Robert G. Wilson v, Mar 07 2017 using Kim Walisch's primecount STATUS approved

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Last modified July 19 22:34 EDT 2024. Contains 374441 sequences. (Running on oeis4.)