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.

A118565 Numbers which are both lucky and triangular.

Table of values

n a(n)
1 1
2 3
3 15
4 21
5 105
6 171
7 231
8 741
9 903
10 1275
11 1485
12 1711
13 2211
14 2415
15 3003
16 3403
17 3655
18 4095
19 4465
20 4851
21 5151
22 5253
23 5671
24 7503
25 8001
26 8515
27 10153
28 10585
29 10731
30 11781
31 13203
32 13695
33 13861
34 17391
35 18145
36 18915
37 19503
38 21115
39 22155
40 22791
41 24531

List of values

[1, 3, 15, 21, 105, 171, 231, 741, 903, 1275, 1485, 1711, 2211, 2415, 3003, 3403, 3655, 4095, 4465, 4851, 5151, 5253, 5671, 7503, 8001, 8515, 10153, 10585, 10731, 11781, 13203, 13695, 13861, 17391, 18145, 18915, 19503, 21115, 22155, 22791, 24531]

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

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