A161940 - cp's OEIS frontend

A161940 a(n) = ((3+sqrt(2))(5+sqrt(2))^n + (3-sqrt(2))(5-sqrt(2))^n)/2.

n	a(n)
0	3
1	17
2	101
3	619
4	3867
5	24433
6	155389
7	991931
8	6345363
9	40639217
10	260448821
11	1669786219
12	10707539307
13	68670310033
14	440429696269
15	2824879831931
16	18118915305123
17	116216916916817
18	745434117150341
19	4781352082416619

[3, 17, 101, 619, 3867, 24433, 155389, 991931, 6345363, 40639217, 260448821, 1669786219, 10707539307, 68670310033, 440429696269, 2824879831931, 18118915305123, 116216916916817, 745434117150341, 4781352082416619]

cp's OEIS Frontend

A161940 a(n) = ((3+sqrt(2))(5+sqrt(2))^n + (3-sqrt(2))(5-sqrt(2))^n)/2.

Table of values

List of values

cp's OEIS Frontend

A161940 a(n) = ((3+sqrt(2))*(5+sqrt(2))^n + (3-sqrt(2))*(5-sqrt(2))^n)/2.

Table of values

List of values

A161940 a(n) = ((3+sqrt(2))(5+sqrt(2))^n + (3-sqrt(2))(5-sqrt(2))^n)/2.