|
Search: id:A024530
|
|
|
| A024530 |
|
Numerator of Sum_{k=1..n} (-1)^k / prime(k). |
|
+0
9
|
|
| 1, 1, 11, 47, 727, 7141, 151427, 2366603, 64131559, 1636722341, 57208085801, 1916138684507, 85982424199597, 3392993977055461, 172553478253276697, 8530444564835173531, 535885387802465283059, 30766248305796169627529
(list; graph; listen)
|
|
|
OFFSET
|
1,3
|
|
|
LINKS
|
T. D. Noe, Table of n, a(n) for n=1..100
|
|
EXAMPLE
|
1/2, 1/6, 11/30, 47/210, 727/2310, 7141/30030, 151427/510510, ...
|
|
MAPLE
|
A024530 := n->numer(add((-1)^(k+1)/ithprime(k), k=1..n));
|
|
CROSSREFS
|
Denominators are A002110.
Sequence in context: A067355 A138362 A072372 this_sequence A117066 A042984 A008780
Adjacent sequences: A024527 A024528 A024529 this_sequence A024531 A024532 A024533
|
|
KEYWORD
|
nonn,frac,easy,nice
|
|
AUTHOR
|
Clark Kimberling (ck6(AT)evansville.edu)
|
|
|
Search completed in 0.002 seconds
|
