A163609 - cp's OEIS frontend

A163609 a(n) = ((5 + 2sqrt(2))(3 + sqrt(2))^n + (5 - 2sqrt(2))(3 - sqrt(2))^n)/2.

n	a(n)
0	5
1	19
2	79
3	341
4	1493
5	6571
6	28975
7	127853
8	564293
9	2490787
10	10994671
11	48532517
12	214232405
13	945666811
14	4174374031
15	18426576509
16	81338840837
17	359047009459
18	1584910170895
19	6996131959157
20	30882420558677
21	136321599637963

[5, 19, 79, 341, 1493, 6571, 28975, 127853, 564293, 2490787, 10994671, 48532517, 214232405, 945666811, 4174374031, 18426576509, 81338840837, 359047009459, 1584910170895, 6996131959157, 30882420558677, 136321599637963]

cp's OEIS Frontend

A163609 a(n) = ((5 + 2sqrt(2))(3 + sqrt(2))^n + (5 - 2sqrt(2))(3 - sqrt(2))^n)/2.

Table of values

List of values

cp's OEIS Frontend

A163609 a(n) = ((5 + 2*sqrt(2))*(3 + sqrt(2))^n + (5 - 2*sqrt(2))*(3 - sqrt(2))^n)/2.

Table of values

List of values

A163609 a(n) = ((5 + 2sqrt(2))(3 + sqrt(2))^n + (5 - 2sqrt(2))(3 - sqrt(2))^n)/2.