A163608 - cp's OEIS frontend

A163608 a(n) = ((5 + 2sqrt(2))(2 + sqrt(2))^n + (5 - 2sqrt(2))(2 - sqrt(2))^n)/2.

n	a(n)
0	5
1	14
2	46
3	156
4	532
5	1816
6	6200
7	21168
8	72272
9	246752
10	842464
11	2876352
12	9820480
13	33529216
14	114475904
15	390845184
16	1334428928
17	4556025344
18	15555243520
19	53108923392
20	181325206528
21	619082979328
22	2113681504256
23	7216560058368

[5, 14, 46, 156, 532, 1816, 6200, 21168, 72272, 246752, 842464, 2876352, 9820480, 33529216, 114475904, 390845184, 1334428928, 4556025344, 15555243520, 53108923392, 181325206528, 619082979328, 2113681504256, 7216560058368]

cp's OEIS Frontend

A163608 a(n) = ((5 + 2sqrt(2))(2 + sqrt(2))^n + (5 - 2sqrt(2))(2 - sqrt(2))^n)/2.

Table of values

List of values

cp's OEIS Frontend

A163608 a(n) = ((5 + 2*sqrt(2))*(2 + sqrt(2))^n + (5 - 2*sqrt(2))*(2 - sqrt(2))^n)/2.

Table of values

List of values

A163608 a(n) = ((5 + 2sqrt(2))(2 + sqrt(2))^n + (5 - 2sqrt(2))(2 - sqrt(2))^n)/2.