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.

A294036 a(n) = 4^n*hypergeom([-n/4, (1-n)/4, (2-n)/4, (3-n)/4], [1, 1, 1], 1).

Table of values

n a(n)
0 1
1 4
2 16
3 64
4 280
5 1504
6 9856
7 70144
8 498136
9 3449440
10 23506816
11 160566784
12 1115048896
13 7905796864
14 56994288640
15 414928113664
16 3034880623576
17 22255957312864
18 163667338903936
19 1208070406612480
20 8955840250934080
21 66678657938510080

List of values

[1, 4, 16, 64, 280, 1504, 9856, 70144, 498136, 3449440, 23506816, 160566784, 1115048896, 7905796864, 56994288640, 414928113664, 3034880623576, 22255957312864, 163667338903936, 1208070406612480, 8955840250934080, 66678657938510080]

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

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