A002801 - cp's OEIS frontend

A002801 a(n) = (2n-1)a(n-1) - (n-1)*a(n-2) with a(0) = a(1) = 1.

n	a(n)
0	1
1	1
2	2
3	8
4	50
5	418
6	4348
7	54016
8	779804
9	12824540
10	236648024
11	4841363104
12	108748223128
13	2660609220952
14	70422722065040
15	2005010410792832
16	61098981903602192
17	1984186236246187024
18	68407835576255308576
19	2495374564069015050880
20	96019859122742736121376
21	3886906732751071879958816
22	165120572466718493379680192

[1, 1, 2, 8, 50, 418, 4348, 54016, 779804, 12824540, 236648024, 4841363104, 108748223128, 2660609220952, 70422722065040, 2005010410792832, 61098981903602192, 1984186236246187024, 68407835576255308576, 2495374564069015050880, 96019859122742736121376, 3886906732751071879958816, 165120572466718493379680192]

cp's OEIS Frontend

A002801 a(n) = (2n-1)a(n-1) - (n-1)*a(n-2) with a(0) = a(1) = 1.

Table of values

List of values

cp's OEIS Frontend

A002801 a(n) = (2*n-1)*a(n-1) - (n-1)*a(n-2) with a(0) = a(1) = 1.

Table of values

List of values

A002801 a(n) = (2n-1)a(n-1) - (n-1)*a(n-2) with a(0) = a(1) = 1.