A247249 - cp's OEIS frontend

A247249 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	4
3	22
4	166
5	1582
6	18232
7	246508
8	3825244
9	67001212
10	1307450224
11	28126466824
12	661290689416
13	16869784837288
14	464080969569184
15	13694525105228368
16	431491492805617168
17	14458331664269020432
18	513376963627111206976
19	19255197624159957025888

[1, 1, 4, 22, 166, 1582, 18232, 246508, 3825244, 67001212, 1307450224, 28126466824, 661290689416, 16869784837288, 464080969569184, 13694525105228368, 431491492805617168, 14458331664269020432, 513376963627111206976, 19255197624159957025888]

cp's OEIS Frontend

A247249 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

A247249 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

A247249 a(n) = (2n-1)a(n-1) + (n-1)*a(n-2) with a(0) = a(1) = 1.