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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.

A147849 a(n) is the smallest triangular number > n-th prime.

Table of values

n a(n)
1 3
2 6
3 6
4 10
5 15
6 15
7 21
8 21
9 28
10 36
11 36
12 45
13 45
14 45
15 55
16 55
17 66
18 66
19 78
20 78
21 78
22 91
23 91
24 91
25 105
26 105
27 105
28 120
29 120
30 120
31 136
32 136
33 153
34 153
35 153
36 153
37 171
38 171
39 171
40 190
41 190
42 190
43 210
44 210
45 210
46 210
47 231
48 231
49 231
50 231
51 253
52 253
53 253
54 253
55 276
56 276
57 276
58 276

List of values

[3, 6, 6, 10, 15, 15, 21, 21, 28, 36, 36, 45, 45, 45, 55, 55, 66, 66, 78, 78, 78, 91, 91, 91, 105, 105, 105, 120, 120, 120, 136, 136, 153, 153, 153, 153, 171, 171, 171, 190, 190, 190, 210, 210, 210, 210, 231, 231, 231, 231, 253, 253, 253, 253, 276, 276, 276, 276]