|
|
A072107
|
|
a(n) = Sum_{k=1..n} A014963(k).
|
|
3
|
|
|
1, 3, 6, 8, 13, 14, 21, 23, 26, 27, 38, 39, 52, 53, 54, 56, 73, 74, 93, 94, 95, 96, 119, 120, 125, 126, 129, 130, 159, 160, 191, 193, 194, 195, 196, 197, 234, 235, 236, 237, 278, 279, 322, 323, 324, 325, 372, 373, 380, 381, 382, 383, 436, 437, 438, 439, 440, 441
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,2
|
|
COMMENTS
|
Is there an expression for lim_{n -> infinity} a(n)/n^2?
|
|
LINKS
|
|
|
MATHEMATICA
|
Accumulate[Table[Exp[MangoldtLambda[n]], {n, 1, 60}]] (* Amiram Eldar, May 05 2022 *)
|
|
PROG
|
(PARI) for(n=2, 100, print1(1+sum(k=2, n, if(if(omega(k)-1, 0, 1)*component(component(factor(k), 1), 1), if(omega(k)-1, 0, 1)*component(component(factor(k), 1), 1), 1)), ", "))
|
|
CROSSREFS
|
|
|
KEYWORD
|
easy,nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|