A353410 - cp's OEIS frontend

A353410 a(n) = (tan(1Pi/9))^(2n) + (tan(2Pi/9))^(2n) + (tan(3Pi/9))^(2n) + (tan(4Pi/9))^(2n).

n	a(n)
0	4
1	36
2	1044
3	33300
4	1070244
5	34420356
6	1107069876
7	35607151476
8	1145248326468
9	36835122753252
10	1184744167077204
11	38105444942929620
12	1225602095970073572
13	39419576386043222340
14	1267869080483029127412
15	40779027899804602385460
16	1311593714249667915837060
17	42185362424185765127267748

[4, 36, 1044, 33300, 1070244, 34420356, 1107069876, 35607151476, 1145248326468, 36835122753252, 1184744167077204, 38105444942929620, 1225602095970073572, 39419576386043222340, 1267869080483029127412, 40779027899804602385460, 1311593714249667915837060, 42185362424185765127267748]

cp's OEIS Frontend

A353410 a(n) = (tan(1Pi/9))^(2n) + (tan(2Pi/9))^(2n) + (tan(3Pi/9))^(2n) + (tan(4Pi/9))^(2n).

Table of values

List of values

cp's OEIS Frontend

A353410 a(n) = (tan(1*Pi/9))^(2*n) + (tan(2*Pi/9))^(2*n) + (tan(3*Pi/9))^(2*n) + (tan(4*Pi/9))^(2*n).

Table of values

List of values

A353410 a(n) = (tan(1Pi/9))^(2n) + (tan(2Pi/9))^(2n) + (tan(3Pi/9))^(2n) + (tan(4Pi/9))^(2n).