A099940 - cp's OEIS frontend

A099940 a(n) = 2(A056855(n)) /(phi(n)n), where phi() is the Euler phi function.

n	a(n)
1	2
2	1
3	1
4	1
5	5
6	1
7	84
8	11
9	184
10	15
11	193248
12	23
13	19056960
14	833
15	33740
16	64035
17	520105017600
18	2473
19	130859579289600
20	203685
21	963513600
22	23748417
23	16397141420298240000
24	645119
25	555804546402631680
26	8527366575

[2, 1, 1, 1, 5, 1, 84, 11, 184, 15, 193248, 23, 19056960, 833, 33740, 64035, 520105017600, 2473, 130859579289600, 203685, 963513600, 23748417, 16397141420298240000, 645119, 555804546402631680, 8527366575]

cp's OEIS Frontend

A099940 a(n) = 2(A056855(n)) /(phi(n)n), where phi() is the Euler phi function.

Table of values

List of values

cp's OEIS Frontend

A099940 a(n) = 2*(A056855(n)) /(phi(n)*n), where phi() is the Euler phi function.

Table of values

List of values

A099940 a(n) = 2(A056855(n)) /(phi(n)n), where phi() is the Euler phi function.