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.

A188244 Number of arrangements of n+2 nonzero numbers x(i) in -4..4 with the sum of x(i)*x(i+1) equal to zero.

Table of values

n a(n)
1 64
2 144
3 1504
4 7092
5 58824
6 368588
7 2880240
8 20265640
9 156028036
10 1154193268
11 8877588920
12 67251222980
13 518783061524
14 3979996140580
15 30813430250120
16 238176520092556
17 1850203922639624
18 14371954026347848
19 111969329295785092

List of values

[64, 144, 1504, 7092, 58824, 368588, 2880240, 20265640, 156028036, 1154193268, 8877588920, 67251222980, 518783061524, 3979996140580, 30813430250120, 238176520092556, 1850203922639624, 14371954026347848, 111969329295785092]

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

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