A198305 - cp's OEIS frontend

A198305 L.g.f.: Sum_{n>=1} (x^n/n) / Product_{d|n} (1 - n*x^d/d).

n	a(n)
1	1
2	3
3	7
4	19
5	51
6	159
7	519
8	1867
9	7234
10	30243
11	135125
12	642307
13	3231047
14	17138845
15	95554662
16	558384955
17	3411049542
18	21730279218
19	144048688538
20	991665854999
21	7077433997172
22	52283785492733
23	399238054300828
24	3147127294177099
25	25579801627862301
26	214139186144996635

[1, 3, 7, 19, 51, 159, 519, 1867, 7234, 30243, 135125, 642307, 3231047, 17138845, 95554662, 558384955, 3411049542, 21730279218, 144048688538, 991665854999, 7077433997172, 52283785492733, 399238054300828, 3147127294177099, 25579801627862301, 214139186144996635]

cp's OEIS Frontend

A198305 L.g.f.: Sum_{n>=1} (x^n/n) / Product_{d|n} (1 - n*x^d/d).

Table of values

List of values