A245176 - cp's OEIS frontend

A245176 a(n) = 2a(n-1)+(n-2)a(n-2)-(n-1)*a(n-3) with initial terms (1,2,4).

n	a(n)
0	1
1	2
2	4
3	8
4	18
5	44
6	120
7	352
8	1116
9	3736
10	13232
11	48928
12	189080
13	757584
14	3148064
15	13497600
16	59704336
17	271503648
18	1268817472
19	6078518912
20	29837183008
21	149789875904
22	768674514816
23	4026518397440
24	21518708975040
25	117199152735616
26	650184360936192
27	3670861106911744

[1, 2, 4, 8, 18, 44, 120, 352, 1116, 3736, 13232, 48928, 189080, 757584, 3148064, 13497600, 59704336, 271503648, 1268817472, 6078518912, 29837183008, 149789875904, 768674514816, 4026518397440, 21518708975040, 117199152735616, 650184360936192, 3670861106911744]

cp's OEIS Frontend

A245176 a(n) = 2a(n-1)+(n-2)a(n-2)-(n-1)*a(n-3) with initial terms (1,2,4).

Table of values

List of values

cp's OEIS Frontend

A245176 a(n) = 2*a(n-1)+(n-2)*a(n-2)-(n-1)*a(n-3) with initial terms (1,2,4).

Table of values

List of values

A245176 a(n) = 2a(n-1)+(n-2)a(n-2)-(n-1)*a(n-3) with initial terms (1,2,4).