|
| |
|
|
A088583
|
|
Primes of the form n*x^n + (n-1)*x^(n-1) + . . . + x + 1 for x=4.
|
|
0
| |
|
|
5, 37, 229, 6373, 30949, 145637, 13514981, 4891490533, 28831638239461, 923485001094508397344997, 1074600728546337044183267557, 385383811277918317317596838657669349
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,1
|
|
|
COMMENTS
| Sum of reciprocals = 0.2315900030315841482180710713.. Are these primes infinite?
|
|
|
EXAMPLE
| 2*4^2 + 4 + 1 = 37.
|
|
|
PROG
| (PARI) trajpolyn(n1, k) = { s=0; for(x1=0, n1, y1 = polypn2(k, x1); print1(y1", "); s+=1.0/y1; ); print(); print(s) } polypn2(n, p) = { x=n; y=1; for(m=1, p, y=y+m*x^m; ); return(y) }
|
|
|
CROSSREFS
| Sequence in context: A095924 A179567 A088582 * A202556 A015548 A183385
Adjacent sequences: A088580 A088581 A088582 * A088584 A088585 A088586
|
|
|
KEYWORD
| nonn
|
|
|
AUTHOR
| Cino Hilliard (hillcino368(AT)gmail.com), Nov 20 2003
|
| |
|
|
