A219230 - cp's OEIS frontend

A219230 G.f.: exp( Sum_{n>=1} x^n/n * Product_{k>=1} 1/(1 - x^(nk)(1 + x^n)^k) ).

n	a(n)
0	1
1	1
2	2
3	5
4	13
5	32
6	82
7	201
8	498
9	1214
10	2954
11	7117
12	17115
13	40880
14	97336
15	230699
16	545068
17	1283150
18	3011783
19	7047353
20	16445814
21	38275172
22	88859213
23	205796476
24	475539242
25	1096428621
26	2522704211
27	5792637135
28	13275381694
29	30367439045
30	69341077367
31	158059717986
32	359688534284

[1, 1, 2, 5, 13, 32, 82, 201, 498, 1214, 2954, 7117, 17115, 40880, 97336, 230699, 545068, 1283150, 3011783, 7047353, 16445814, 38275172, 88859213, 205796476, 475539242, 1096428621, 2522704211, 5792637135, 13275381694, 30367439045, 69341077367, 158059717986, 359688534284]

cp's OEIS Frontend

A219230 G.f.: exp( Sum_{n>=1} x^n/n * Product_{k>=1} 1/(1 - x^(nk)(1 + x^n)^k) ).

Table of values

List of values

cp's OEIS Frontend

A219230 G.f.: exp( Sum_{n>=1} x^n/n * Product_{k>=1} 1/(1 - x^(n*k)*(1 + x^n)^k) ).

Table of values

List of values

A219230 G.f.: exp( Sum_{n>=1} x^n/n * Product_{k>=1} 1/(1 - x^(nk)(1 + x^n)^k) ).