A163065 - cp's OEIS frontend

A163065 a(n) = ((3+sqrt(5))(5+sqrt(5))^n + (3-sqrt(5))(5-sqrt(5))^n)/2.

n	a(n)
0	3
1	20
2	140
3	1000
4	7200
5	52000
6	376000
7	2720000
8	19680000
9	142400000
10	1030400000
11	7456000000
12	53952000000
13	390400000000
14	2824960000000
15	20441600000000
16	147916800000000
17	1070336000000000
18	7745024000000000
19	56043520000000000

[3, 20, 140, 1000, 7200, 52000, 376000, 2720000, 19680000, 142400000, 1030400000, 7456000000, 53952000000, 390400000000, 2824960000000, 20441600000000, 147916800000000, 1070336000000000, 7745024000000000, 56043520000000000]

cp's OEIS Frontend

A163065 a(n) = ((3+sqrt(5))(5+sqrt(5))^n + (3-sqrt(5))(5-sqrt(5))^n)/2.

Table of values

List of values

cp's OEIS Frontend

A163065 a(n) = ((3+sqrt(5))*(5+sqrt(5))^n + (3-sqrt(5))*(5-sqrt(5))^n)/2.

Table of values

List of values

A163065 a(n) = ((3+sqrt(5))(5+sqrt(5))^n + (3-sqrt(5))(5-sqrt(5))^n)/2.