|
Search: id:A088816
|
|
|
| A088816 |
|
Numbers of the form p^p - 2 where p is prime. |
|
+0
1
|
|
| 2, 25, 3123, 823541, 285311670609, 302875106592251, 827240261886336764175, 1978419655660313589123977, 20880467999847912034355032910565, 2567686153161211134561828214731016126483467
(list; graph; listen)
|
|
|
OFFSET
|
1,1
|
|
|
COMMENT
|
Sum of reciprocals = 0.5403214192032919719402677251
|
|
FORMULA
|
a(n) = A088730(n)-1=A088731(n)+1. - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Apr 26 2007
|
|
PROGRAM
|
(PARI) ptop(n, m) = { sr=0; forprime(x=2, n, y=x^x-m; print1(y", "); sr += 1.0/y; ); print(); print(sr) }
|
|
CROSSREFS
|
Sequence in context: A059363 A014050 A015214 this_sequence A141415 A056948 A035420
Adjacent sequences: A088813 A088814 A088815 this_sequence A088817 A088818 A088819
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Cino Hilliard (hillcino368(AT)gmail.com), Nov 23 2003
|
|
|
Search completed in 0.005 seconds
|
