A163615 - cp's OEIS frontend

A163615 a(n) = ((1 + 3sqrt(2))(4 + sqrt(2))^n + (1 - 3sqrt(2))(4 - sqrt(2))^n)/2.

n	a(n)
0	1
1	10
2	66
3	388
4	2180
5	12008
6	65544
7	356240
8	1932304
9	10471072
10	56716320
11	307135552
12	1663055936
13	9004549760
14	48753614976
15	263965223168
16	1429171175680
17	7737856281088
18	41894453789184
19	226825642378240
20	1228082785977344

[1, 10, 66, 388, 2180, 12008, 65544, 356240, 1932304, 10471072, 56716320, 307135552, 1663055936, 9004549760, 48753614976, 263965223168, 1429171175680, 7737856281088, 41894453789184, 226825642378240, 1228082785977344]

cp's OEIS Frontend

A163615 a(n) = ((1 + 3sqrt(2))(4 + sqrt(2))^n + (1 - 3sqrt(2))(4 - sqrt(2))^n)/2.

Table of values

List of values

cp's OEIS Frontend

A163615 a(n) = ((1 + 3*sqrt(2))*(4 + sqrt(2))^n + (1 - 3*sqrt(2))*(4 - sqrt(2))^n)/2.

Table of values

List of values

A163615 a(n) = ((1 + 3sqrt(2))(4 + sqrt(2))^n + (1 - 3sqrt(2))(4 - sqrt(2))^n)/2.