|
Search: id:A073163
|
|
| |
|
| 0, 3, 68, 259, 5500628, 1180641920, 19503263760, 46464766631, 863653341852
(list; graph; listen)
|
|
|
OFFSET
|
1,2
|
|
|
FORMULA
|
Values of s(n)=A046992(n) such that s(n)/n is integer.
|
|
EXAMPLE
|
Sum of first 17 values of Pi(n) equals: 0+1+2+2+3+3+4+4+4+4+5+5+6+6+6+6+7=68=4.17 In order to continue, see A073224.
|
|
MATHEMATICA
|
s = 0; Do[s = s + PrimePi[n]; If[ IntegerQ[s/n], Print[{n, s, s/n}]], {n, 1, 10^8}]
|
|
CROSSREFS
|
Cf. A046992, A000720, A073162, A073164 & A073224.
Adjacent sequences: A073160 A073161 A073162 this_sequence A073164 A073165 A073166
Sequence in context: A041983 A091872 A079320 this_sequence A124181 A046432 A086223
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Labos E. (labos(AT)ana.sote.hu), Jul 18 2002
|
|
EXTENSIONS
|
Edited and extended by Robert G. Wilson v (rgwv(AT)rgwv.com), Jul 20 2002
|
|
|
Search completed in 0.002 seconds
|
