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.

A065097 a(n) = ((2n+1) + (2n-1) - 1)!/((2n+1)!*(2n-1)!).

Table of values

n a(n)
0 1
1 1
2 7
3 66
4 715
5 8398
6 104006
7 1337220
8 17678835
9 238819350
10 3282060210
11 45741281820
12 644952073662
13 9183676536076
14 131873975875180
15 1907493251046152
16 27767032438524099
17 406472021074865382
18 5979899192930226746
19 88366931393503350700
20 1311063521138246054410

List of values

[1, 1, 7, 66, 715, 8398, 104006, 1337220, 17678835, 238819350, 3282060210, 45741281820, 644952073662, 9183676536076, 131873975875180, 1907493251046152, 27767032438524099, 406472021074865382, 5979899192930226746, 88366931393503350700, 1311063521138246054410]