A136326 - cp's OEIS frontend

A136326 a(n) = a(n-1) + 4a(n-2) - 4a(n-3).

n	a(n)
0	1
1	2
2	4
3	9
4	17
5	37
6	69
7	149
8	277
9	597
10	1109
11	2389
12	4437
13	9557
14	17749
15	38229
16	70997
17	152917
18	283989
19	611669
20	1135957
21	2446677
22	4543829
23	9786709
24	18175317
25	39146837
26	72701269
27	156587349
28	290805077
29	626349397
30	1163220309
31	2505397589
32	4652881237
33	10021590357

[1, 2, 4, 9, 17, 37, 69, 149, 277, 597, 1109, 2389, 4437, 9557, 17749, 38229, 70997, 152917, 283989, 611669, 1135957, 2446677, 4543829, 9786709, 18175317, 39146837, 72701269, 156587349, 290805077, 626349397, 1163220309, 2505397589, 4652881237, 10021590357]

cp's OEIS Frontend

A136326 a(n) = a(n-1) + 4a(n-2) - 4a(n-3).

Table of values

List of values