A280352 - cp's OEIS frontend

A280352 Expansion of Sum_{k>=1} (x/(1 - x))^(k*(k+1)/2).

n	a(n)
1	1
2	1
3	2
4	4
5	7
6	12
7	22
8	43
9	85
10	164
11	308
12	573
13	1079
14	2081
15	4097
16	8129
17	16049
18	31315
19	60402
20	115806
21	222416
22	430791
23	843987
24	1670054
25	3322167
26	6606936
27	13078586
28	25714238
29	50230292
30	97708338
31	189921842
32	370216757
33	725680489
34	1431888173
35	2842060970
36	5662371069

[1, 1, 2, 4, 7, 12, 22, 43, 85, 164, 308, 573, 1079, 2081, 4097, 8129, 16049, 31315, 60402, 115806, 222416, 430791, 843987, 1670054, 3322167, 6606936, 13078586, 25714238, 50230292, 97708338, 189921842, 370216757, 725680489, 1431888173, 2842060970, 5662371069]

cp's OEIS Frontend

A280352 Expansion of Sum_{k>=1} (x/(1 - x))^(k*(k+1)/2).

Table of values

List of values