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.

A189545 T(n,k)=Number of arrangements of n+1 nonzero numbers x(i) in -k..k with the sum of trunc(x(i)/x(i+1)) equal to zero.

Table of values

n a(n)
1 0
2 4
3 4
4 12
5 8
6 0
7 24
8 28
9 44
10 12
11 40
12 72
13 192
14 152
15 0
16 60
17 152
18 544
19 964
20 552
21 40
22 84
23 264
24 1340
25 3664
26 5416
27 2000
28 0
29 112
30 432
31 2520
32 11276
33 26804
34 31280
35 7628
36 140
37 144
38 660
39 4620
40 26152
41 97836
42 204544
43 173792
44 28440
45 0
46 180
47 968
48 7716
49 56440
50 274132
51 911144

List of values

[0, 4, 4, 12, 8, 0, 24, 28, 44, 12, 40, 72, 192, 152, 0, 60, 152, 544, 964, 552, 40, 84, 264, 1340, 3664, 5416, 2000, 0, 112, 432, 2520, 11276, 26804, 31280, 7628, 140, 144, 660, 4620, 26152, 97836, 204544, 173792, 28440, 0, 180, 968, 7716, 56440, 274132, 911144]