A128230 - cp's OEIS frontend

A128230 Expansion of exp(x)/(1 - x - x^2/2!), where a(n) = 1 + na(n-1) + C(n,2)a(n-2).

n	a(n)
0	1
1	2
2	6
3	25
4	137
5	936
6	7672
7	73361
8	801705
9	9856342
10	134640146
11	2023140417
12	33163934641
13	588936102860
14	11263023492372
15	230783643185881
16	5044101110058737
17	117136294344278346
18	2880200768035996990

[1, 2, 6, 25, 137, 936, 7672, 73361, 801705, 9856342, 134640146, 2023140417, 33163934641, 588936102860, 11263023492372, 230783643185881, 5044101110058737, 117136294344278346, 2880200768035996990]

cp's OEIS Frontend

A128230 Expansion of exp(x)/(1 - x - x^2/2!), where a(n) = 1 + na(n-1) + C(n,2)a(n-2).

Table of values

List of values

cp's OEIS Frontend

A128230 Expansion of exp(x)/(1 - x - x^2/2!), where a(n) = 1 + n*a(n-1) + C(n,2)*a(n-2).

Table of values

List of values

A128230 Expansion of exp(x)/(1 - x - x^2/2!), where a(n) = 1 + na(n-1) + C(n,2)a(n-2).