A372661 - cp's OEIS frontend

A372661 a(n) = Sum_{i=1..n} Sum_{j=1..n} Sum_{k=1..n} phi(ijk).

n	a(n)
1	1
2	14
3	98
4	412
5	1436
6	3212
7	8312
8	17460
9	34182
10	57406
11	107306
12	161942
13	277550
14	406490
15	581210
16	850162
17	1292018
18	1701752
19	2481476
20	3216100
21	4184464
22	5406704
23	7414512
24	9119640
25	11849180
26	14736284
27	18541664
28	22500200
29	28950168
30	33410736
31	42380976
32	51166240
33	60859420

[1, 14, 98, 412, 1436, 3212, 8312, 17460, 34182, 57406, 107306, 161942, 277550, 406490, 581210, 850162, 1292018, 1701752, 2481476, 3216100, 4184464, 5406704, 7414512, 9119640, 11849180, 14736284, 18541664, 22500200, 28950168, 33410736, 42380976, 51166240, 60859420]

cp's OEIS Frontend

A372661 a(n) = Sum_{i=1..n} Sum_{j=1..n} Sum_{k=1..n} phi(ijk).

Table of values

List of values

cp's OEIS Frontend

A372661 a(n) = Sum_{i=1..n} Sum_{j=1..n} Sum_{k=1..n} phi(i*j*k).

Table of values

List of values

A372661 a(n) = Sum_{i=1..n} Sum_{j=1..n} Sum_{k=1..n} phi(ijk).