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.

A330657 Number of ways the n-th pentagonal number A000326(n) can be written as the difference of two positive pentagonal numbers.

Table of values

n a(n)
1 0
2 0
3 0
4 1
5 1
6 0
7 2
8 0
9 0
10 1
11 0
12 1
13 1
14 1
15 0
16 1
17 2
18 0
19 2
20 1
21 1
22 3
23 1
24 0
25 2
26 3
27 0
28 3
29 1
30 1
31 2
32 1
33 1
34 1
35 2
36 1
37 3
38 1
39 2
40 2
41 1
42 2
43 1
44 1
45 1
46 1
47 3
48 2
49 2
50 2
51 1
52 4
53 1
54 0
55 2
56 1
57 2
58 1
59 1
60 1
61 3
62 2
63 2
64 1
65 3
66 1
67 3
68 2
69 1
70 6
71 1
72 1
73 1
74 3
75 2

List of values

[0, 0, 0, 1, 1, 0, 2, 0, 0, 1, 0, 1, 1, 1, 0, 1, 2, 0, 2, 1, 1, 3, 1, 0, 2, 3, 0, 3, 1, 1, 2, 1, 1, 1, 2, 1, 3, 1, 2, 2, 1, 2, 1, 1, 1, 1, 3, 2, 2, 2, 1, 4, 1, 0, 2, 1, 2, 1, 1, 1, 3, 2, 2, 1, 3, 1, 3, 2, 1, 6, 1, 1, 1, 3, 2]

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

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