A180419 - cp's OEIS frontend

A180419 a(n) = (A000111(2p) - 1)/(2p), where p = A000040(n) = prime(n).

n	a(n)
1	1
2	10
3	5052
4	14240070
5	3152221563324450
6	157195096511273995860
7	2374214683408467590063771983920
8	618146855974818638210995488847340730
9	144946467754033586465978879886385830380958862710

[1, 10, 5052, 14240070, 3152221563324450, 157195096511273995860, 2374214683408467590063771983920, 618146855974818638210995488847340730, 144946467754033586465978879886385830380958862710]

cp's OEIS Frontend

A180419 a(n) = (A000111(2p) - 1)/(2p), where p = A000040(n) = prime(n).

Table of values

List of values

cp's OEIS Frontend

A180419 a(n) = (A000111(2*p) - 1)/(2*p), where p = A000040(n) = prime(n).

Table of values

List of values

A180419 a(n) = (A000111(2p) - 1)/(2p), where p = A000040(n) = prime(n).