A162773 - cp's OEIS frontend

A162773 a(n) = ((2+sqrt(5))(5+sqrt(5))^n + (2-sqrt(5))(5-sqrt(5))^n)/2.

n	a(n)
0	2
1	15
2	110
3	800
4	5800
5	42000
6	304000
7	2200000
8	15920000
9	115200000
10	833600000
11	6032000000
12	43648000000
13	315840000000
14	2285440000000
15	16537600000000
16	119667200000000
17	865920000000000
18	6265856000000000
19	45340160000000000

[2, 15, 110, 800, 5800, 42000, 304000, 2200000, 15920000, 115200000, 833600000, 6032000000, 43648000000, 315840000000, 2285440000000, 16537600000000, 119667200000000, 865920000000000, 6265856000000000, 45340160000000000]

cp's OEIS Frontend

A162773 a(n) = ((2+sqrt(5))(5+sqrt(5))^n + (2-sqrt(5))(5-sqrt(5))^n)/2.

Table of values

List of values

cp's OEIS Frontend

A162773 a(n) = ((2+sqrt(5))*(5+sqrt(5))^n + (2-sqrt(5))*(5-sqrt(5))^n)/2.

Table of values

List of values

A162773 a(n) = ((2+sqrt(5))(5+sqrt(5))^n + (2-sqrt(5))(5-sqrt(5))^n)/2.