A141185 a(n) = prime(prime(prime(prime(prime(prime(n)-1)-1)-1)-1)-1)-1, where prime(n) is the n-th prime.

1, 2, 862, 6688, 40086, 67138, 133998, 169986, 279816, 481020, 521860, 843376, 1063156, 1137456, 1337152, 1784610, 2176660, 2307082, 2794248, 3275662, 3395830, 3948472, 4334320, 4964242, 5718550, 6402580, 6652620, 7068780, 7352178, 7715292, 9493110, 10098576, 10825182

Offset: 1

Author

Juri-Stepan Gerasimov, Jul 31 2008

Keywords

• nonn

Crossrefs

Cf. A141139. - Juri-Stepan Gerasimov, Oct 25 2009

Programs

Maple

p:=ithprime: seq(p(p(p(p(p(p(n)-1)-1)-1)-1)-1)-1, n=1..28); \\ Juri-Stepan Gerasimov, Oct 25 2009

Mathematica

Table[Prime[Prime[Prime[Prime[Prime[Prime[n - 1] - 1] - 1] - 1] - 1] - 1] - 1, {n, 2, 50}] (* Vincenzo Librandi, Apr 05 2015 *)

Extensions

More terms from R. J. Mathar, Sep 13 2008