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A057450 Prime recurrence: a(n+1) = a(n)-th prime, with a(1) = 4. 12
4, 7, 17, 59, 277, 1787, 15299, 167449, 2269733, 37139213, 718064159, 16123689073, 414507281407, 12055296811267, 392654585611999, 14199419938376521, 565855918431234443 (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
REFERENCES
Alexandrov, Lubomir. "On the nonasymptotic prime number distribution." arXiv preprint math/9811096 (1998). (See Appendix.)
LINKS
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, 4, 13 ]
PROG
(Python)
from sympy import prime
from itertools import accumulate
def f(an, _): return prime(an)
print(list(accumulate([4]*12, f))) # Michael S. Branicky, Apr 07 2021
CROSSREFS
Cf. A007097.
Sequence in context: A049944 A098091 A319782 * A077274 A292850 A080650
KEYWORD
nonn,hard,more
AUTHOR
Robert G. Wilson v, Sep 26 2000
EXTENSIONS
a(15)-a(17) from Robert G. Wilson v, Mar 07 2017 using Kim Walisch's primecount
STATUS
approved

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Last modified March 28 10:55 EDT 2024. Contains 371241 sequences. (Running on oeis4.)