|
|
A089621
|
|
n^4 + n-th prime.
|
|
1
|
|
|
3, 19, 86, 263, 636, 1309, 2418, 4115, 6584, 10029, 14672, 20773, 28602, 38459, 50672, 65589, 83580, 105037, 130388, 160071, 194554, 234335, 279924, 331865, 390722, 457077, 531544, 614763, 707390, 810113, 923648, 1048707, 1186058
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
Sum of reciprocals = 0.40492582319615..
|
|
LINKS
|
|
|
MATHEMATICA
|
|
|
PROG
|
(PARI) primeppwr(n) = { sr=0; for(x=1, n, y=x^4+prime(x); print1(y", "); sr+=1./y; ); print(); print(sr) }
|
|
CROSSREFS
|
|
|
KEYWORD
|
easy,nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|