A206289 - cp's OEIS frontend

A206289 G.f.: Sum_{n>=0} Product_{k=1..n} Series_Reversion( x*(1 - x^k) ).

n	a(n)
0	1
1	1
2	2
3	4
4	10
5	25
6	73
7	214
8	679
9	2189
10	7331
11	24867
12	86269
13	302144
14	1072621
15	3837768
16	13853674
17	50319789
18	183941789
19	675731105
20	2494370326
21	9244865453
22	34394851701
23	128390336942
24	480749791772
25	1805161153783
26	6795744287172
27	25643914891284
28	96980809856731

[1, 1, 2, 4, 10, 25, 73, 214, 679, 2189, 7331, 24867, 86269, 302144, 1072621, 3837768, 13853674, 50319789, 183941789, 675731105, 2494370326, 9244865453, 34394851701, 128390336942, 480749791772, 1805161153783, 6795744287172, 25643914891284, 96980809856731]

cp's OEIS Frontend

A206289 G.f.: Sum_{n>=0} Product_{k=1..n} Series_Reversion( x*(1 - x^k) ).

Table of values

List of values