A231352 - cp's OEIS frontend

A231352 G.f.: Sum_{n>=0} x^n * Product_{k=1..n} (k - x) / (1 - k*x + x^2).

n	a(n)
0	1
1	1
2	2
3	8
4	50
5	382
6	3434
7	35694
8	421682
9	5582158
10	81860978
11	1317457646
12	23087951666
13	437673142510
14	8924179990322
15	194763818998638
16	4530072136715954
17	111870258525352174
18	2923319958390174770
19	80590596894930389102
20	2337567736223817582002
21	71162943130933082039278

[1, 1, 2, 8, 50, 382, 3434, 35694, 421682, 5582158, 81860978, 1317457646, 23087951666, 437673142510, 8924179990322, 194763818998638, 4530072136715954, 111870258525352174, 2923319958390174770, 80590596894930389102, 2337567736223817582002, 71162943130933082039278]

cp's OEIS Frontend

A231352 G.f.: Sum_{n>=0} x^n * Product_{k=1..n} (k - x) / (1 - k*x + x^2).

Table of values

List of values