A054631 - cp's OEIS frontend

A054631 Triangle read by rows: row n (n >= 1) contains the numbers T(n,k) = Sum_{d|n} phi(d)*k^(n/d)/n, for k=1..n.

n	a(n)
1	1
2	1
3	3
4	1
5	4
6	11
7	1
8	6
9	24
10	70
11	1
12	8
13	51
14	208
15	629
16	1
17	14
18	130
19	700
20	2635
21	7826
22	1
23	20
24	315
25	2344
26	11165
27	39996
28	117655
29	1
30	36
31	834
32	8230
33	48915
34	210126
35	720916
36	2097684
37	1
38	60
39	2195
40	29144
41	217045
42	1119796
43	4483815
44	14913200
45	43046889

[1, 1, 3, 1, 4, 11, 1, 6, 24, 70, 1, 8, 51, 208, 629, 1, 14, 130, 700, 2635, 7826, 1, 20, 315, 2344, 11165, 39996, 117655, 1, 36, 834, 8230, 48915, 210126, 720916, 2097684, 1, 60, 2195, 29144, 217045, 1119796, 4483815, 14913200, 43046889]

cp's OEIS Frontend

A054631 Triangle read by rows: row n (n >= 1) contains the numbers T(n,k) = Sum_{d|n} phi(d)*k^(n/d)/n, for k=1..n.

Table of values

List of values