A372622 - cp's OEIS frontend

A372622 a(n) = (1/4) * Sum_{k=1..n} phi(5*k).

n	a(n)
1	1
2	2
3	4
4	6
5	11
6	13
7	19
8	23
9	29
10	34
11	44
12	48
13	60
14	66
15	76
16	84
17	100
18	106
19	124
20	134
21	146
22	156
23	178
24	186
25	211
26	223
27	241
28	253
29	281
30	291
31	321
32	337
33	357
34	373
35	403
36	415
37	451
38	469
39	493
40	513
41	553
42	565
43	607
44	627
45	657
46	679
47	725
48	741
49	783
50	808
51	840
52	864
53	916
54	934
55	984
56	1008
57	1044

[1, 2, 4, 6, 11, 13, 19, 23, 29, 34, 44, 48, 60, 66, 76, 84, 100, 106, 124, 134, 146, 156, 178, 186, 211, 223, 241, 253, 281, 291, 321, 337, 357, 373, 403, 415, 451, 469, 493, 513, 553, 565, 607, 627, 657, 679, 725, 741, 783, 808, 840, 864, 916, 934, 984, 1008, 1044]

cp's OEIS Frontend

A372622 a(n) = (1/4) * Sum_{k=1..n} phi(5*k).

Table of values

List of values