A163607 - cp's OEIS frontend

A163607 a(n) = ((5 + 2sqrt(2))(1 + sqrt(2))^n + (5 - 2sqrt(2))(1 - sqrt(2))^n)/2.

n	a(n)
0	5
1	9
2	23
3	55
4	133
5	321
6	775
7	1871
8	4517
9	10905
10	26327
11	63559
12	153445
13	370449
14	894343
15	2159135
16	5212613
17	12584361
18	30381335
19	73347031
20	177075397
21	427497825
22	1032071047
23	2491639919
24	6015350885
25	14522341689
26	35060034263
27	84642410215

[5, 9, 23, 55, 133, 321, 775, 1871, 4517, 10905, 26327, 63559, 153445, 370449, 894343, 2159135, 5212613, 12584361, 30381335, 73347031, 177075397, 427497825, 1032071047, 2491639919, 6015350885, 14522341689, 35060034263, 84642410215]

cp's OEIS Frontend

A163607 a(n) = ((5 + 2sqrt(2))(1 + sqrt(2))^n + (5 - 2sqrt(2))(1 - sqrt(2))^n)/2.

Table of values

List of values

cp's OEIS Frontend

A163607 a(n) = ((5 + 2*sqrt(2))*(1 + sqrt(2))^n + (5 - 2*sqrt(2))*(1 - sqrt(2))^n)/2.

Table of values

List of values

A163607 a(n) = ((5 + 2sqrt(2))(1 + sqrt(2))^n + (5 - 2sqrt(2))(1 - sqrt(2))^n)/2.