login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A141139 a(n) = f(f(f(f(f(n))))), where f(n) is prime(n)-1. 2
1, 2, 150, 862, 4210, 6688, 12496, 15496, 24420, 40086, 43206, 67138, 83046, 88426, 102646, 133998, 161092, 169986, 202966, 235288, 243262, 279816, 305068, 346168, 394812, 438568, 454500, 481020, 498936, 521860, 633160, 670728, 715698, 741400 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
MAPLE
p:=ithprime: seq(p(p(p(p(p(n)-1)-1)-1)-1)-1, n=1..35); # Emeric Deutsch, Aug 06 2008
MATHEMATICA
Table[Prime[Prime[Prime[Prime[Prime[n - 1] - 1] - 1] - 1] - 1] - 1, {n, 2, 50}] (* Vincenzo Librandi, Apr 05 2015 *)
PROG
(PARI) vector(50, n, prime(prime(prime(prime(prime(n)-1)-1)-1)-1)-1) \\ Michel Marcus, Apr 09 2015
CROSSREFS
Sequence in context: A068987 A273047 A209077 * A141130 A157074 A329712
KEYWORD
nonn
AUTHOR
EXTENSIONS
More terms from Emeric Deutsch, Aug 06 2008
STATUS
approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 18 11:52 EDT 2024. Contains 371779 sequences. (Running on oeis4.)