A193111 - cp's OEIS frontend

A193111 G.f. satisfies: 1 = Sum_{n>=0} (-x)^(n(n+1)/2) A(x)^(n+1).

n	a(n)
0	1
1	1
2	2
3	6
4	19
5	63
6	218
7	781
8	2869
9	10742
10	40846
11	157318
12	612446
13	2406100
14	9527159
15	37981611
16	152328497
17	614167702
18	2487941464
19	10121128882
20	41330709103
21	169362297620
22	696187639438
23	2870017515884
24	11862845007114
25	49152859179055

[1, 1, 2, 6, 19, 63, 218, 781, 2869, 10742, 40846, 157318, 612446, 2406100, 9527159, 37981611, 152328497, 614167702, 2487941464, 10121128882, 41330709103, 169362297620, 696187639438, 2870017515884, 11862845007114, 49152859179055]

cp's OEIS Frontend

A193111 G.f. satisfies: 1 = Sum_{n>=0} (-x)^(n(n+1)/2) A(x)^(n+1).

Table of values

List of values

cp's OEIS Frontend

A193111 G.f. satisfies: 1 = Sum_{n>=0} (-x)^(n*(n+1)/2) * A(x)^(n+1).

Table of values

List of values

A193111 G.f. satisfies: 1 = Sum_{n>=0} (-x)^(n(n+1)/2) A(x)^(n+1).