A135742 - cp's OEIS frontend

A135742 E.g.f.: A(x) = Sum_{n>=0} exp( n(n-1)/2 x ) * x^n / n!.

n	a(n)
0	1
1	1
2	1
3	4
4	19
5	131
6	1156
7	12622
8	166825
9	2600677
10	47038456
11	974165336
12	22829939089
13	599668759483
14	17512623094240
15	564613124026876
16	19972670155565761
17	771019774737952313
18	32326390781950804048

[1, 1, 1, 4, 19, 131, 1156, 12622, 166825, 2600677, 47038456, 974165336, 22829939089, 599668759483, 17512623094240, 564613124026876, 19972670155565761, 771019774737952313, 32326390781950804048]

cp's OEIS Frontend

A135742 E.g.f.: A(x) = Sum_{n>=0} exp( n(n-1)/2 x ) * x^n / n!.

Table of values

List of values

cp's OEIS Frontend

A135742 E.g.f.: A(x) = Sum_{n>=0} exp( n*(n-1)/2 * x ) * x^n / n!.

Table of values

List of values

A135742 E.g.f.: A(x) = Sum_{n>=0} exp( n(n-1)/2 x ) * x^n / n!.