A082056 - cp's OEIS frontend

A082056 Least x = a(n) such that sum of common prime divisors (without multiplicity) of sigma(x) and phi(x) equals n, or 0 if such number (apparently) does not exist.

n	a(n)
1	0
2	3
3	18
4	0
5	14
6	0
7	88
8	1800
9	116
10	196
11	9801
12	377
13	2881
14	1189
15	711
16	989
17	3596
18	477
19	6901
20	5203
21	8473
22	9179
23	3956
24	7067
25	6439
26	27709
27	41309
28	10763
29	27117
30	20569
31	10207
32	69091
33	4976
34	15376
35	114953
36	18650
37	204469
38	37225
39	16279
40	130300
41	74450
42	10877

[0, 3, 18, 0, 14, 0, 88, 1800, 116, 196, 9801, 377, 2881, 1189, 711, 989, 3596, 477, 6901, 5203, 8473, 9179, 3956, 7067, 6439, 27709, 41309, 10763, 27117, 20569, 10207, 69091, 4976, 15376, 114953, 18650, 204469, 37225, 16279, 130300, 74450, 10877]

cp's OEIS Frontend

A082056 Least x = a(n) such that sum of common prime divisors (without multiplicity) of sigma(x) and phi(x) equals n, or 0 if such number (apparently) does not exist.

Table of values

List of values