A001519 - cp's OEIS frontend

A001519 a(n) = 3*a(n-1) - a(n-2) for n >= 2, with a(0) = a(1) = 1.

n	a(n)
0	1
1	1
2	2
3	5
4	13
5	34
6	89
7	233
8	610
9	1597
10	4181
11	10946
12	28657
13	75025
14	196418
15	514229
16	1346269
17	3524578
18	9227465
19	24157817
20	63245986
21	165580141
22	433494437
23	1134903170
24	2971215073
25	7778742049
26	20365011074
27	53316291173
28	139583862445
29	365435296162
30	956722026041

[1, 1, 2, 5, 13, 34, 89, 233, 610, 1597, 4181, 10946, 28657, 75025, 196418, 514229, 1346269, 3524578, 9227465, 24157817, 63245986, 165580141, 433494437, 1134903170, 2971215073, 7778742049, 20365011074, 53316291173, 139583862445, 365435296162, 956722026041]

cp's OEIS Frontend

A001519 a(n) = 3*a(n-1) - a(n-2) for n >= 2, with a(0) = a(1) = 1.

Table of values

List of values