A302109 - cp's OEIS frontend

A302109 Smallest integer N such that there are exactly n cyclic groups C_2 in the multiplicative group of integers modulo N when decomposed as a product of cyclic groups C_{k_1} x C_{k_2} x ... x C_{k_m}, and k_i divides k_j for i < j.

n	a(n)
0	1
1	3
2	8
3	24
4	840
5	9240
6	212520
7	9988440
8	589317960
9	48913390680
10	5233732802760
11	874033378060920
12	156451974672904680
13	35514598250749362360
14	8487988981929097604040
15	2232341102247352669862520
16	721046176025894912365593960
17	51194278497838538777957171160

[1, 3, 8, 24, 840, 9240, 212520, 9988440, 589317960, 48913390680, 5233732802760, 874033378060920, 156451974672904680, 35514598250749362360, 8487988981929097604040, 2232341102247352669862520, 721046176025894912365593960, 51194278497838538777957171160]

cp's OEIS Frontend

A302109 Smallest integer N such that there are exactly n cyclic groups C_2 in the multiplicative group of integers modulo N when decomposed as a product of cyclic groups C_{k_1} x C_{k_2} x ... x C_{k_m}, and k_i divides k_j for i < j.

Table of values

List of values