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.

A276542 Numbers k such that the k-th and (k+1)st triangular numbers have the same number of divisors.

Table of values

n a(n)
1 3
2 4
3 5
4 11
5 17
6 28
7 29
8 33
9 41
10 42
11 52
12 55
13 59
14 66
15 68
16 71
17 76
18 85
19 88
20 91
21 93
22 101
23 107
24 114
25 123
26 137
27 141
28 143
29 149
30 150
31 159
32 170
33 172
34 179
35 183
36 185
37 186
38 188
39 191
40 196
41 197
42 201
43 203
44 208
45 213
46 215
47 217
48 219
49 227
50 232
51 235
52 236
53 239
54 243
55 244
56 247
57 265

List of values

[3, 4, 5, 11, 17, 28, 29, 33, 41, 42, 52, 55, 59, 66, 68, 71, 76, 85, 88, 91, 93, 101, 107, 114, 123, 137, 141, 143, 149, 150, 159, 170, 172, 179, 183, 185, 186, 188, 191, 196, 197, 201, 203, 208, 213, 215, 217, 219, 227, 232, 235, 236, 239, 243, 244, 247, 265]