A160892 - cp's OEIS frontend

A160892 a(n) = ((2^b-1)/phi(n))Sum_{d|n} Moebius(n/d)d^(b-1) for b = 4.

n	a(n)
1	15
2	105
3	195
4	420
5	465
6	1365
7	855
8	1680
9	1755
10	3255
11	1995
12	5460
13	2745
14	5985
15	6045
16	6720
17	4605
18	12285
19	5715
20	13020
21	11115
22	13965
23	8295
24	21840
25	11625
26	19215
27	15795
28	23940
29	13065
30	42315
31	14895
32	26880
33	25935
34	32235
35	26505
36	49140
37	21105
38	40005
39	35685
40	52080
41	25845

[15, 105, 195, 420, 465, 1365, 855, 1680, 1755, 3255, 1995, 5460, 2745, 5985, 6045, 6720, 4605, 12285, 5715, 13020, 11115, 13965, 8295, 21840, 11625, 19215, 15795, 23940, 13065, 42315, 14895, 26880, 25935, 32235, 26505, 49140, 21105, 40005, 35685, 52080, 25845]

cp's OEIS Frontend

A160892 a(n) = ((2^b-1)/phi(n))Sum_{d|n} Moebius(n/d)d^(b-1) for b = 4.

Table of values

List of values

cp's OEIS Frontend

A160892 a(n) = ((2^b-1)/phi(n))*Sum_{d|n} Moebius(n/d)*d^(b-1) for b = 4.

Table of values

List of values

A160892 a(n) = ((2^b-1)/phi(n))Sum_{d|n} Moebius(n/d)d^(b-1) for b = 4.