A163070 - cp's OEIS frontend

A163070 a(n) = ((4+sqrt(5))(2+sqrt(5))^n + (4-sqrt(5))(2-sqrt(5))^n)/2.

n	a(n)
0	4
1	13
2	56
3	237
4	1004
5	4253
6	18016
7	76317
8	323284
9	1369453
10	5801096
11	24573837
12	104096444
13	440959613
14	1867934896
15	7912699197
16	33518731684
17	141987625933
18	601469235416
19	2547864567597
20	10792927505804
21	45719574590813

[4, 13, 56, 237, 1004, 4253, 18016, 76317, 323284, 1369453, 5801096, 24573837, 104096444, 440959613, 1867934896, 7912699197, 33518731684, 141987625933, 601469235416, 2547864567597, 10792927505804, 45719574590813]

cp's OEIS Frontend

A163070 a(n) = ((4+sqrt(5))(2+sqrt(5))^n + (4-sqrt(5))(2-sqrt(5))^n)/2.

Table of values

List of values

cp's OEIS Frontend

A163070 a(n) = ((4+sqrt(5))*(2+sqrt(5))^n + (4-sqrt(5))*(2-sqrt(5))^n)/2.

Table of values

List of values

A163070 a(n) = ((4+sqrt(5))(2+sqrt(5))^n + (4-sqrt(5))(2-sqrt(5))^n)/2.