A146312 - cp's OEIS frontend

A146312 a(n) = -cos((2n-1)arcsin(sqrt(3)))^2 = -1 + cosh((2n-1)arcsinh(sqrt(2)))^2.

n	a(n)
1	2
2	242
3	23762
4	2328482
5	228167522
6	22358088722
7	2190864527282
8	214682365584962
9	21036680962799042
10	2061380051988721202
11	201994208413931878802
12	19793371044513335401442
13	1939548368153892937462562
14	190055946708036994535929682
15	18623543229019471571583646322

[2, 242, 23762, 2328482, 228167522, 22358088722, 2190864527282, 214682365584962, 21036680962799042, 2061380051988721202, 201994208413931878802, 19793371044513335401442, 1939548368153892937462562, 190055946708036994535929682, 18623543229019471571583646322]

cp's OEIS Frontend

A146312 a(n) = -cos((2n-1)arcsin(sqrt(3)))^2 = -1 + cosh((2n-1)arcsinh(sqrt(2)))^2.

Table of values

List of values

cp's OEIS Frontend

A146312 a(n) = -cos((2*n-1)*arcsin(sqrt(3)))^2 = -1 + cosh((2*n-1)*arcsinh(sqrt(2)))^2.

Table of values

List of values

A146312 a(n) = -cos((2n-1)arcsin(sqrt(3)))^2 = -1 + cosh((2n-1)arcsinh(sqrt(2)))^2.