A190981 - cp's OEIS frontend

A190981 a(n) = 9a(n-1) - 4a(n-2), with a(0)=0, a(1)=1.

n	a(n)
0	0
1	1
2	9
3	77
4	657
5	5605
6	47817
7	407933
8	3480129
9	29689429
10	253284345
11	2160801389
12	18434075121
13	157263470533
14	1341634934313
15	11445660526685
16	97644405002913
17	833017002919477
18	7106575406263641
19	60627110644694861
20	517217694177199185
21	4412450805016013221

[0, 1, 9, 77, 657, 5605, 47817, 407933, 3480129, 29689429, 253284345, 2160801389, 18434075121, 157263470533, 1341634934313, 11445660526685, 97644405002913, 833017002919477, 7106575406263641, 60627110644694861, 517217694177199185, 4412450805016013221]

cp's OEIS Frontend

A190981 a(n) = 9a(n-1) - 4a(n-2), with a(0)=0, a(1)=1.

Table of values

List of values

cp's OEIS Frontend

A190981 a(n) = 9*a(n-1) - 4*a(n-2), with a(0)=0, a(1)=1.

Table of values

List of values

A190981 a(n) = 9a(n-1) - 4a(n-2), with a(0)=0, a(1)=1.