A354277 - cp's OEIS frontend

A354277 Product_{n>=1} 1 / (1 - x^n/n!)^a(n) = exp(-x) / (1 - x).

n	a(n)
1	0
2	1
3	2
4	3
5	24
6	70
7	720
8	4305
9	39200
10	337176
11	3628800
12	38417610
13	479001600
14	6128488080
15	87104969952
16	1297383162075
17	20922789888000
18	354250929192160
19	6402373705728000
20	121407227453840328
21	2432849766865689600
22	51041047393559059200
23	1124000727777607680000

[0, 1, 2, 3, 24, 70, 720, 4305, 39200, 337176, 3628800, 38417610, 479001600, 6128488080, 87104969952, 1297383162075, 20922789888000, 354250929192160, 6402373705728000, 121407227453840328, 2432849766865689600, 51041047393559059200, 1124000727777607680000]

cp's OEIS Frontend

A354277 Product_{n>=1} 1 / (1 - x^n/n!)^a(n) = exp(-x) / (1 - x).

Table of values

List of values