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.

A225787 Least prime number p such that p*triangular(n) is a triangular number, or 0 if no such p exists.

Table of values

n a(n)
0 2
1 3
2 2
3 11
4 19
5 3
6 5
7 0
8 71
9 23
10 109
11 131
12 17
13 181
14 2
15 239
16 271
17 307
18 0
19 379
20 3
21 13
22 127
23 61
24 67
25 163
26 701
27 47
28 811
29 97
30 37
31 991
32 0
33 31
34 0
35 79
36 83
37 0
38 41
39 7
40 0
41 191
42 37
43 0
44 5
45 83
46 541
47 251
48 2351
49 613
50 71
51 0
52 0
53 2861
54 743
55 3079
56 3191
57 367
58 0
59 3539
60 229
61 0
62 977
63 0
64 4159

List of values

[2, 3, 2, 11, 19, 3, 5, 0, 71, 23, 109, 131, 17, 181, 2, 239, 271, 307, 0, 379, 3, 13, 127, 61, 67, 163, 701, 47, 811, 97, 37, 991, 0, 31, 0, 79, 83, 0, 41, 7, 0, 191, 37, 0, 5, 83, 541, 251, 2351, 613, 71, 0, 0, 2861, 743, 3079, 3191, 367, 0, 3539, 229, 0, 977, 0, 4159]