A163613 - cp's OEIS frontend

A163613 a(n) = ((1 + 3sqrt(2))(2 + sqrt(2))^n + (1 - 3sqrt(2))(2 - sqrt(2))^n)/2.

n	a(n)
0	1
1	8
2	30
3	104
4	356
5	1216
6	4152
7	14176
8	48400
9	165248
10	564192
11	1926272
12	6576704
13	22454272
14	76663680
15	261746176
16	893657344
17	3051137024
18	10417233408
19	35566659584
20	121432171520
21	414595366912
22	1415517124608
23	4832877764608

[1, 8, 30, 104, 356, 1216, 4152, 14176, 48400, 165248, 564192, 1926272, 6576704, 22454272, 76663680, 261746176, 893657344, 3051137024, 10417233408, 35566659584, 121432171520, 414595366912, 1415517124608, 4832877764608]

cp's OEIS Frontend

A163613 a(n) = ((1 + 3sqrt(2))(2 + sqrt(2))^n + (1 - 3sqrt(2))(2 - sqrt(2))^n)/2.

Table of values

List of values

cp's OEIS Frontend

A163613 a(n) = ((1 + 3*sqrt(2))*(2 + sqrt(2))^n + (1 - 3*sqrt(2))*(2 - sqrt(2))^n)/2.

Table of values

List of values

A163613 a(n) = ((1 + 3sqrt(2))(2 + sqrt(2))^n + (1 - 3sqrt(2))(2 - sqrt(2))^n)/2.