A162273 - cp's OEIS frontend

A162273 a(n) = ((2+sqrt(3))(3+sqrt(3))^n + (2-sqrt(3))(3-sqrt(3))^n)/2.

n	a(n)
0	2
1	9
2	42
3	198
4	936
5	4428
6	20952
7	99144
8	469152
9	2220048
10	10505376
11	49711968
12	235239552
13	1113165504
14	5267555712
15	24926341248
16	117952713216
17	558158231808
18	2641233111552
19	12498449278464
20	59143297001472
21	279869086338048

[2, 9, 42, 198, 936, 4428, 20952, 99144, 469152, 2220048, 10505376, 49711968, 235239552, 1113165504, 5267555712, 24926341248, 117952713216, 558158231808, 2641233111552, 12498449278464, 59143297001472, 279869086338048]

cp's OEIS Frontend

A162273 a(n) = ((2+sqrt(3))(3+sqrt(3))^n + (2-sqrt(3))(3-sqrt(3))^n)/2.

Table of values

List of values

cp's OEIS Frontend

A162273 a(n) = ((2+sqrt(3))*(3+sqrt(3))^n + (2-sqrt(3))*(3-sqrt(3))^n)/2.

Table of values

List of values

A162273 a(n) = ((2+sqrt(3))(3+sqrt(3))^n + (2-sqrt(3))(3-sqrt(3))^n)/2.