A321398 - cp's OEIS frontend

A321398 a(n) = (-1)^(n+1)n! [x^n](log(x + 1)/2 + log(3*x + 1)/6).

n	a(n)
0	0
1	1
2	2
3	10
4	84
5	984
6	14640
7	262800
8	5513760
9	132289920
10	3571464960
11	107140320000
12	3535590643200
13	127280784153600
14	4963944354969600
15	208485575730432000
16	9381849600195072000
17	450328759886573568000
18	22966766398527823872000
19	1240205379118128783360000

[0, 1, 2, 10, 84, 984, 14640, 262800, 5513760, 132289920, 3571464960, 107140320000, 3535590643200, 127280784153600, 4963944354969600, 208485575730432000, 9381849600195072000, 450328759886573568000, 22966766398527823872000, 1240205379118128783360000]

cp's OEIS Frontend

A321398 a(n) = (-1)^(n+1)n! [x^n](log(x + 1)/2 + log(3*x + 1)/6).

Table of values

List of values

cp's OEIS Frontend

A321398 a(n) = (-1)^(n+1)*n!* [x^n](log(x + 1)/2 + log(3*x + 1)/6).

Table of values

List of values

A321398 a(n) = (-1)^(n+1)n! [x^n](log(x + 1)/2 + log(3*x + 1)/6).