A122069 - cp's OEIS frontend

A122069 a(n) = 3a(n-1) + 9a(n-2) for n > 1, with a(0)=1, a(1)=3.

n	a(n)
0	1
1	3
2	18
3	81
4	405
5	1944
6	9477
7	45927
8	223074
9	1082565
10	5255361
11	25509168
12	123825753
13	601059771
14	2917611090
15	14162371209
16	68745613437
17	333698181192
18	1619805064509
19	7862698824255
20	38166342053346
21	185263315578333

[1, 3, 18, 81, 405, 1944, 9477, 45927, 223074, 1082565, 5255361, 25509168, 123825753, 601059771, 2917611090, 14162371209, 68745613437, 333698181192, 1619805064509, 7862698824255, 38166342053346, 185263315578333]

cp's OEIS Frontend

A122069 a(n) = 3a(n-1) + 9a(n-2) for n > 1, with a(0)=1, a(1)=3.

Table of values

List of values

cp's OEIS Frontend

A122069 a(n) = 3*a(n-1) + 9*a(n-2) for n > 1, with a(0)=1, a(1)=3.

Table of values

List of values

A122069 a(n) = 3a(n-1) + 9a(n-2) for n > 1, with a(0)=1, a(1)=3.