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.

A211506 Number of ordered triples (w,x,y) with all terms in {1,...,n} and w^2=x*y+n.

Table of values

n a(n)
0 0
1 0
2 2
3 3
4 2
5 5
6 6
7 7
8 9
9 11
10 10
11 9
12 13
13 17
14 14
15 14
16 29
17 17
18 18
19 25
20 21
21 28
22 26
23 17
24 32
25 59
26 24
27 28
28 39
29 37
30 28
31 41
32 36
33 42
34 50
35 28
36 91
37 55
38 26
39 44
40 66
41 55
42 40
43 57
44 59
45 67
46 70
47 31
48 65
49 151
50 48
51 62
52 85
53 57
54 68
55 70
56 78
57 84
58 72
59 55
60 92
61 115
62 38
63 71
64 210
65 88
66 80
67 89

List of values

[0, 0, 2, 3, 2, 5, 6, 7, 9, 11, 10, 9, 13, 17, 14, 14, 29, 17, 18, 25, 21, 28, 26, 17, 32, 59, 24, 28, 39, 37, 28, 41, 36, 42, 50, 28, 91, 55, 26, 44, 66, 55, 40, 57, 59, 67, 70, 31, 65, 151, 48, 62, 85, 57, 68, 70, 78, 84, 72, 55, 92, 115, 38, 71, 210, 88, 80, 89]

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

Content is available under The OEIS End-User License Agreement.