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.

A099045 a(n) = (3*0^n + 4^n*binomial(2*n,n))/4.

Table of values

n a(n)
0 1
1 2
2 24
3 320
4 4480
5 64512
6 946176
7 14057472
8 210862080
9 3186360320
10 48432676864
11 739699064832
12 11342052327424
13 174493112729600
14 2692179453542400
15 41639042214789120
16 645405154329231360
17 10022762396642181120
18 155909637281100595200

List of values

[1, 2, 24, 320, 4480, 64512, 946176, 14057472, 210862080, 3186360320, 48432676864, 739699064832, 11342052327424, 174493112729600, 2692179453542400, 41639042214789120, 645405154329231360, 10022762396642181120, 155909637281100595200]

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

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