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.

A048359 a(n) is the index of the smallest triangular number containing exactly n 4's.

Table of values

n a(n)
1 9
2 94
3 537
4 1043
5 29238
6 28790
7 94238
8 942703
9 2967970
10 45748113
11 170565790
12 939618480
13 2981759361
14 29814031731
15 94285146809
16 298802358238
17 2837045748113
18 9428516473384
19 29810549959517
20 537482082424790
21 699205897721757
22 2974721655733337
23 29032426496744790
24 29814339990932029
25 1043498506508221519

List of values

[9, 94, 537, 1043, 29238, 28790, 94238, 942703, 2967970, 45748113, 170565790, 939618480, 2981759361, 29814031731, 94285146809, 298802358238, 2837045748113, 9428516473384, 29810549959517, 537482082424790, 699205897721757, 2974721655733337, 29032426496744790, 29814339990932029, 1043498506508221519]