A192540 - cp's OEIS frontend

A192540 G.f.: A(x) = Series_Reversion(xG(x)) where G(x) = Sum_{n>=0} (-x)^(n(n+1)/2).

n	a(n)
1	1
2	1
3	2
4	6
5	20
6	70
7	255
8	960
9	3707
10	14597
11	58382
12	236522
13	968597
14	4003061
15	16674858
16	69936760
17	295092057
18	1251747436
19	5334958079
20	22834290248
21	98108081192
22	422986894605
23	1829443421394
24	7935301625600
25	34510975557383
26	150456011512671
27	657415433062780

[1, 1, 2, 6, 20, 70, 255, 960, 3707, 14597, 58382, 236522, 968597, 4003061, 16674858, 69936760, 295092057, 1251747436, 5334958079, 22834290248, 98108081192, 422986894605, 1829443421394, 7935301625600, 34510975557383, 150456011512671, 657415433062780]

cp's OEIS Frontend

A192540 G.f.: A(x) = Series_Reversion(xG(x)) where G(x) = Sum_{n>=0} (-x)^(n(n+1)/2).

Table of values

List of values

cp's OEIS Frontend

A192540 G.f.: A(x) = Series_Reversion(x*G(x)) where G(x) = Sum_{n>=0} (-x)^(n*(n+1)/2).

Table of values

List of values

A192540 G.f.: A(x) = Series_Reversion(xG(x)) where G(x) = Sum_{n>=0} (-x)^(n(n+1)/2).