A327927 - cp's OEIS frontend

A327927 Expansion of e.g.f. exp(Sum_{i>=1} Sum_{j=1..i} x^(ij) / (ij)).

n	a(n)
0	1
1	1
2	2
3	6
4	30
5	150
6	1020
7	7140
8	63420
9	611100
10	6625080
11	72875880
12	977213160
13	12876743880
14	190951160400
15	2975661889200
16	51767677962000
17	886225654314000
18	17136230971860000
19	329530590793404000
20	7035395004749311200
21	151961029211943151200

[1, 1, 2, 6, 30, 150, 1020, 7140, 63420, 611100, 6625080, 72875880, 977213160, 12876743880, 190951160400, 2975661889200, 51767677962000, 886225654314000, 17136230971860000, 329530590793404000, 7035395004749311200, 151961029211943151200]

cp's OEIS Frontend

A327927 Expansion of e.g.f. exp(Sum_{i>=1} Sum_{j=1..i} x^(ij) / (ij)).

Table of values

List of values

cp's OEIS Frontend

A327927 Expansion of e.g.f. exp(Sum_{i>=1} Sum_{j=1..i} x^(i*j) / (i*j)).

Table of values

List of values

A327927 Expansion of e.g.f. exp(Sum_{i>=1} Sum_{j=1..i} x^(ij) / (ij)).