The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A100768 a(n) = p * (n^p) - 1 where p = prime(n). 0
 1, 23, 1214, 114687, 537109374, 169789022207, 3954718737782518, 2738188573441261567, 203847576752007525206366, 2899999999999999999999999999999, 5950246173690264895628552080046140 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS EXAMPLE If n=1, then p=2 and a(1)=2*1^2 - 1 = 1. If n=2, then p=3 and a(2)=3*2^3 - 1 = 23. If n=3, then p=5 and a(3)=5*3^5 - 1 = 1214. MAPLE a:=n->ithprime(n)*n^ithprime(n)-1: seq(a(n), n=1..13); # Emeric Deutsch, Aug 01 2005 MATHEMATICA Table[Prime[n]*n^Prime[n]-1, {n, 12}] (* Harvey P. Dale, Jul 18 2018 *) PROG (PARI) a(n) = my(p=prime(n)); p*(n^p) - 1; \\ Michel Marcus, Aug 16 2019 CROSSREFS Sequence in context: A340487 A321569 A061063 * A201309 A049003 A268961 Adjacent sequences:  A100765 A100766 A100767 * A100769 A100770 A100771 KEYWORD nonn,easy AUTHOR Parthasarathy Nambi, Jan 03 2005 EXTENSIONS More terms from Emeric Deutsch, Aug 01 2005 STATUS approved

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

Last modified May 16 12:30 EDT 2021. Contains 343947 sequences. (Running on oeis4.)