cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A146313 a(n) = cosh( (2n - 1)*arcsinh(sqrt(2)) )^2 = 1 - cos( (2n - 1)*arcsin(sqrt(3)) )^2.

Table of values

n a(n)
1 3
2 243
3 23763
4 2328483
5 228167523
6 22358088723
7 2190864527283
8 214682365584963
9 21036680962799043
10 2061380051988721203
11 201994208413931878803
12 19793371044513335401443
13 1939548368153892937462563
14 190055946708036994535929683
15 18623543229019471571583646323

List of values

[3, 243, 23763, 2328483, 228167523, 22358088723, 2190864527283, 214682365584963, 21036680962799043, 2061380051988721203, 201994208413931878803, 19793371044513335401443, 1939548368153892937462563, 190055946708036994535929683, 18623543229019471571583646323]