A350920 - cp's OEIS frontend

A350920 a(0) = 5, a(1) = 5, and a(n) = 4*a(n-1) - a(n-2) - 4 for n >= 2.

n	a(n)
0	5
1	5
2	11
3	35
4	125
5	461
6	1715
7	6395
8	23861
9	89045
10	332315
11	1240211
12	4628525
13	17273885
14	64467011
15	240594155
16	897909605
17	3351044261
18	12506267435
19	46674025475
20	174189834461
21	650085312365
22	2426151414995
23	9054520347611
24	33791929975445
25	126113199554165
26	470660868241211
27	1756530273410675
28	6555460225401485
29	24465310628195261
30	91305782287379555

[5, 5, 11, 35, 125, 461, 1715, 6395, 23861, 89045, 332315, 1240211, 4628525, 17273885, 64467011, 240594155, 897909605, 3351044261, 12506267435, 46674025475, 174189834461, 650085312365, 2426151414995, 9054520347611, 33791929975445, 126113199554165, 470660868241211, 1756530273410675, 6555460225401485, 24465310628195261, 91305782287379555]

cp's OEIS Frontend

A350920 a(0) = 5, a(1) = 5, and a(n) = 4*a(n-1) - a(n-2) - 4 for n >= 2.

Table of values

List of values