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.

A145638 Denominator the polynomial A_l(x) = sum_{d=1..l-1} x^(l-d)/d for index l=2n+1 evaluated at x=14.

Table of values

n a(n)
1 1
2 6
3 15
4 60
5 45
6 990
7 6435
8 10296
9 43758
10 4157010
11 2078505
12 191222460
13 239028075
14 1434168450
15 20795442525
16 10314539492400
17 2578634873100
18 1289317436550
19 23852372576175
20 95409490304700
21 977947275623175
22 84103465703593050

List of values

[1, 6, 15, 60, 45, 990, 6435, 10296, 43758, 4157010, 2078505, 191222460, 239028075, 1434168450, 20795442525, 10314539492400, 2578634873100, 1289317436550, 23852372576175, 95409490304700, 977947275623175, 84103465703593050]