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.

A002105 Reduced tangent numbers: 2^n*(2^{2n} - 1)*|B_{2n}|/n, where B_n = Bernoulli numbers.

Table of values

n a(n)
1 1
2 1
3 4
4 34
5 496
6 11056
7 349504
8 14873104
9 819786496
10 56814228736
11 4835447317504
12 495812444583424
13 60283564499562496
14 8575634961418940416
15 1411083019275488149504
16 265929039218907754399744
17 56906245479134057176170496
18 13722623393637762299131396096
19 3704005473270641755597685653504

List of values

[1, 1, 4, 34, 496, 11056, 349504, 14873104, 819786496, 56814228736, 4835447317504, 495812444583424, 60283564499562496, 8575634961418940416, 1411083019275488149504, 265929039218907754399744, 56906245479134057176170496, 13722623393637762299131396096, 3704005473270641755597685653504]