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.

A000911 a(n) = (2n+3)! /( n! * (n+1)! ).

Table of values

n a(n)
0 6
1 60
2 420
3 2520
4 13860
5 72072
6 360360
7 1750320
8 8314020
9 38798760
10 178474296
11 811246800
12 3650610600
13 16287339600
14 72129646800
15 317370445920
16 1388495700900
17 6044040109800
18 26190840475800
19 113034153632400
20 486046860619320
21 2083057974082800
22 8900338616535600

List of values

[6, 60, 420, 2520, 13860, 72072, 360360, 1750320, 8314020, 38798760, 178474296, 811246800, 3650610600, 16287339600, 72129646800, 317370445920, 1388495700900, 6044040109800, 26190840475800, 113034153632400, 486046860619320, 2083057974082800, 8900338616535600]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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