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Let f(k) = k + pi(k); a(n) = least number of steps for f(f(f(...(n)))) to reach a prime.
#8 by Michel Marcus at Mon Jul 31 05:26:22 EDT 2023
STATUS
#7 by Joerg Arndt at Mon Jul 31 05:24:26 EDT 2023
STATUS
#6 by Jean-François Alcover at Mon Jul 31 04:41:43 EDT 2023
STATUS
#5 by Jean-François Alcover at Mon Jul 31 04:41:27 EDT 2023
MATHEMATICA
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#4 by N. J. A. Sloane at Thu Dec 05 19:56:38 EST 2013
AUTHOR
Discussion
Thu Dec 05
19:56
OEIS Server: https://oeis.org/edit/global/2075
#3 by Russ Cox at Sat Mar 31 13:21:28 EDT 2012
EXTENSIONS
Discussion
Sat Mar 31
13:21
OEIS Server: https://oeis.org/edit/global/884
#2 by N. J. A. Sloane at Fri May 19 03:00:00 EDT 2006
DATA
KEYWORD
EXTENSIONS
#1 by N. J. A. Sloane at Thu Feb 19 03:00:00 EST 2004
NAME
DATA
OFFSET
EXAMPLE
CROSSREFS
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AUTHOR
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