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.

A189494 Number of arrangements of n+1 nonzero numbers x(i) in -5..5 with the sum of floor(x(i)/x(i+1)) equal to zero.

Table of values

n a(n)
1 20
2 148
3 1088
4 9394
5 85480
6 787412
7 7250142
8 67449574
9 630466648
10 5926141678
11 55929815964
12 529724228140
13 5032227826544
14 47929965246944
15 457554555905322
16 4376712118553570
17 41939283915535994
18 402511337790992824

List of values

[20, 148, 1088, 9394, 85480, 787412, 7250142, 67449574, 630466648, 5926141678, 55929815964, 529724228140, 5032227826544, 47929965246944, 457554555905322, 4376712118553570, 41939283915535994, 402511337790992824]