A231896 - cp's OEIS frontend

A231896 a(n) = 4*a(n-1) - a(n-2) with a(0) = 0, a(1) = 4.

n	a(n)
0	0
1	4
2	16
3	60
4	224
5	836
6	3120
7	11644
8	43456
9	162180
10	605264
11	2258876
12	8430240
13	31462084
14	117418096
15	438210300
16	1635423104
17	6103482116
18	22778505360
19	85010539324
20	317263651936
21	1184044068420
22	4418912621744
23	16491606418556
24	61547513052480
25	229698445791364

[0, 4, 16, 60, 224, 836, 3120, 11644, 43456, 162180, 605264, 2258876, 8430240, 31462084, 117418096, 438210300, 1635423104, 6103482116, 22778505360, 85010539324, 317263651936, 1184044068420, 4418912621744, 16491606418556, 61547513052480, 229698445791364]

cp's OEIS Frontend

A231896 a(n) = 4*a(n-1) - a(n-2) with a(0) = 0, a(1) = 4.

Table of values

List of values