A054619 - cp's OEIS frontend

A054619 Triangle T(n,k) = Sum_{d|k} phi(d)*n^(k/d).

n	a(n)
1	1
2	2
3	6
4	3
5	12
6	33
7	4
8	20
9	72
10	280
11	5
12	30
13	135
14	660
15	3145
16	6
17	42
18	228
19	1344
20	7800
21	46956
22	7
23	56
24	357
25	2464
26	16835
27	118104
28	823585
29	8
30	72
31	528
32	4176
33	32800
34	262800
35	2097200
36	16781472
37	9
38	90
39	747
40	6660
41	59085
42	532350
43	4783023
44	43053480
45	387422001

[1, 2, 6, 3, 12, 33, 4, 20, 72, 280, 5, 30, 135, 660, 3145, 6, 42, 228, 1344, 7800, 46956, 7, 56, 357, 2464, 16835, 118104, 823585, 8, 72, 528, 4176, 32800, 262800, 2097200, 16781472, 9, 90, 747, 6660, 59085, 532350, 4783023, 43053480, 387422001]

cp's OEIS Frontend

A054619 Triangle T(n,k) = Sum_{d|k} phi(d)*n^(k/d).

Table of values

List of values