A379494 - cp's OEIS frontend

A379494 a(n) = 2*A276086(n) - A276086(A001065(n)), where A276086 is the primorial base exp-function, and A001065 is the sum of proper divisors of n.

n	a(n)
1	3
2	4
3	10
4	12
5	34
6	5
7	18
8	20
9	51
10	75
11	178
12	-175
13	98
14	105
15	270
16	300
17	898
18	-500
19	498
20	-375
21	1410
22	2175
23	4498
24	1215
25	2495
26	3525
27	7450
28	5625
29	22498
30	-161
31	26
32	28
33	-66
34	-249
35	202
36	-8680
37	138
38	-915
39	-30
40	-1995
41	1258
42	-4025
43	698
44	735
45	2058
46	1275
47	6298
48	-9275
49	3485
50	4900
51	9750
52	14175
53	31498
54	8505
55	17050
56	25809
57	50250
58	78729

[3, 4, 10, 12, 34, 5, 18, 20, 51, 75, 178, -175, 98, 105, 270, 300, 898, -500, 498, -375, 1410, 2175, 4498, 1215, 2495, 3525, 7450, 5625, 22498, -161, 26, 28, -66, -249, 202, -8680, 138, -915, -30, -1995, 1258, -4025, 698, 735, 2058, 1275, 6298, -9275, 3485, 4900, 9750, 14175, 31498, 8505, 17050, 25809, 50250, 78729]

cp's OEIS Frontend

A379494 a(n) = 2*A276086(n) - A276086(A001065(n)), where A276086 is the primorial base exp-function, and A001065 is the sum of proper divisors of n.

Table of values

List of values