A110043 - cp's OEIS frontend

A110043 a(0) = 1, a(1) = 2; for n>1, a(n) = n*a(n-1) + (-1)^n.

n	a(n)
0	1
1	2
2	5
3	14
4	57
5	284
6	1705
7	11934
8	95473
9	859256
10	8592561
11	94518170
12	1134218041
13	14744834532
14	206427683449
15	3096415251734
16	49542644027745
17	842224948471664
18	15160049072489953
19	288040932377309106
20	5760818647546182121
21	120977191598469824540
22	2661498215166336139881

[1, 2, 5, 14, 57, 284, 1705, 11934, 95473, 859256, 8592561, 94518170, 1134218041, 14744834532, 206427683449, 3096415251734, 49542644027745, 842224948471664, 15160049072489953, 288040932377309106, 5760818647546182121, 120977191598469824540, 2661498215166336139881]

cp's OEIS Frontend

A110043 a(0) = 1, a(1) = 2; for n>1, a(n) = n*a(n-1) + (-1)^n.

Table of values

List of values