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.

A253651 Triangular numbers that are the product of a triangular number and a prime number.

Table of values

n a(n)
1 0
2 3
3 6
4 15
5 21
6 45
7 66
8 78
9 105
10 190
11 210
12 231
13 435
14 465
15 630
16 861
17 903
18 1035
19 1326
20 2415
21 2556
22 2628
23 3003
24 3570
25 4005
26 4950
27 5460
28 5565
29 5995
30 7140
31 8646
32 8778
33 9870
34 12246
35 16471
36 16836
37 17205
38 17391
39 17766
40 20100
41 22155
42 26565
43 26796
44 28680
45 28920
46 30381
47 32131
48 33411
49 33930
50 36856

List of values

[0, 3, 6, 15, 21, 45, 66, 78, 105, 190, 210, 231, 435, 465, 630, 861, 903, 1035, 1326, 2415, 2556, 2628, 3003, 3570, 4005, 4950, 5460, 5565, 5995, 7140, 8646, 8778, 9870, 12246, 16471, 16836, 17205, 17391, 17766, 20100, 22155, 26565, 26796, 28680, 28920, 30381, 32131, 33411, 33930, 36856]

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

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