A162772 - cp's OEIS frontend

A162772 a(n) = ((2+sqrt(5))(4+sqrt(5))^n + (2-sqrt(5))(4-sqrt(5))^n)/2.

n	a(n)
0	2
1	13
2	82
3	513
4	3202
5	19973
6	124562
7	776793
8	4844162
9	30208573
10	188382802
11	1174768113
12	7325934082
13	45685023413
14	284894912402
15	1776624041673
16	11079148296962
17	69090321917293
18	430851944071762
19	2686822011483873

[2, 13, 82, 513, 3202, 19973, 124562, 776793, 4844162, 30208573, 188382802, 1174768113, 7325934082, 45685023413, 284894912402, 1776624041673, 11079148296962, 69090321917293, 430851944071762, 2686822011483873]

cp's OEIS Frontend

A162772 a(n) = ((2+sqrt(5))(4+sqrt(5))^n + (2-sqrt(5))(4-sqrt(5))^n)/2.

Table of values

List of values

cp's OEIS Frontend

A162772 a(n) = ((2+sqrt(5))*(4+sqrt(5))^n + (2-sqrt(5))*(4-sqrt(5))^n)/2.

Table of values

List of values

A162772 a(n) = ((2+sqrt(5))(4+sqrt(5))^n + (2-sqrt(5))(4-sqrt(5))^n)/2.