A062882 - cp's OEIS frontend

A062882 a(n) = (1 - 2cos(Pi/9))^n + (1 + 2cos(Pi2/9))^n + (1 + 2cos(Pi*4/9))^n.

n	a(n)
1	3
2	9
3	18
4	45
5	108
6	270
7	675
8	1701
9	4293
10	10854
11	27459
12	69498
13	175932
14	445419
15	1127763
16	2855493
17	7230222
18	18307377
19	46355652
20	117376290
21	297206739
22	752553261
23	1905530913
24	4824972522
25	12217257783
26	30935180610
27	78330624264

[3, 9, 18, 45, 108, 270, 675, 1701, 4293, 10854, 27459, 69498, 175932, 445419, 1127763, 2855493, 7230222, 18307377, 46355652, 117376290, 297206739, 752553261, 1905530913, 4824972522, 12217257783, 30935180610, 78330624264]

cp's OEIS Frontend

A062882 a(n) = (1 - 2cos(Pi/9))^n + (1 + 2cos(Pi2/9))^n + (1 + 2cos(Pi*4/9))^n.

Table of values

List of values

cp's OEIS Frontend

A062882 a(n) = (1 - 2*cos(Pi/9))^n + (1 + 2*cos(Pi*2/9))^n + (1 + 2*cos(Pi*4/9))^n.

Table of values

List of values

A062882 a(n) = (1 - 2cos(Pi/9))^n + (1 + 2cos(Pi2/9))^n + (1 + 2cos(Pi*4/9))^n.