A369425 - cp's OEIS frontend

A369425 Expansion of Sum_{n>=1} x^(n(n+1)/2)((1+x)/(1-x))^n.

n	a(n)
1	1
2	2
3	3
4	6
5	10
6	15
7	24
8	40
9	64
10	97
11	144
12	216
13	328
14	496
15	737
16	1074
17	1546
18	2218
19	3186
20	4578
21	6555
22	9318
23	13130
24	18358
25	25530
26	35398
27	49002
28	67735
29	93416
30	128392
31	175704
32	239352
33	324680
34	438888
35	591672
36	795993
37	1068984
38	1433032
39	1917128
40	2558648
41	3405784
42	4520872
43	5984872
44	7903256
45	10413561

[1, 2, 3, 6, 10, 15, 24, 40, 64, 97, 144, 216, 328, 496, 737, 1074, 1546, 2218, 3186, 4578, 6555, 9318, 13130, 18358, 25530, 35398, 49002, 67735, 93416, 128392, 175704, 239352, 324680, 438888, 591672, 795993, 1068984, 1433032, 1917128, 2558648, 3405784, 4520872, 5984872, 7903256, 10413561]

cp's OEIS Frontend

A369425 Expansion of Sum_{n>=1} x^(n(n+1)/2)((1+x)/(1-x))^n.

Table of values

List of values

cp's OEIS Frontend

A369425 Expansion of Sum_{n>=1} x^(n*(n+1)/2)*((1+x)/(1-x))^n.

Table of values

List of values

A369425 Expansion of Sum_{n>=1} x^(n(n+1)/2)((1+x)/(1-x))^n.