A162769 - cp's OEIS frontend

A162769 a(n) = ((1+sqrt(5))(4+sqrt(5))^n + (1-sqrt(5))(4-sqrt(5))^n)/2.

n	a(n)
0	1
1	9
2	61
3	389
4	2441
5	15249
6	95141
7	593389
8	3700561
9	23077209
10	143911501
11	897442709
12	5596515161
13	34900251489
14	217640345141
15	1357219994749
16	8463716161441
17	52780309349289
18	329141597018461
19	2052549373305509

[1, 9, 61, 389, 2441, 15249, 95141, 593389, 3700561, 23077209, 143911501, 897442709, 5596515161, 34900251489, 217640345141, 1357219994749, 8463716161441, 52780309349289, 329141597018461, 2052549373305509]

cp's OEIS Frontend

A162769 a(n) = ((1+sqrt(5))(4+sqrt(5))^n + (1-sqrt(5))(4-sqrt(5))^n)/2.

Table of values

List of values

cp's OEIS Frontend

A162769 a(n) = ((1+sqrt(5))*(4+sqrt(5))^n + (1-sqrt(5))*(4-sqrt(5))^n)/2.

Table of values

List of values

A162769 a(n) = ((1+sqrt(5))(4+sqrt(5))^n + (1-sqrt(5))(4-sqrt(5))^n)/2.