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.

A119070 Numbers k such that the k-th triangular number contains only digits {0,3,9}.

Table of values

n a(n)
1 2
2 24
3 42
4 44
5 77
6 260
7 282
8 824
9 1364
10 8835
11 44517
12 88419
13 89375
14 256917
15 282842
16 426600
17 2603844
18 14141435
19 424287482
20 894359435
21 24629287602
22 81351102024
23 137064943244
24 1371082295364
25 2489711201364
26 8870066515082

List of values

[2, 24, 42, 44, 77, 260, 282, 824, 1364, 8835, 44517, 88419, 89375, 256917, 282842, 426600, 2603844, 14141435, 424287482, 894359435, 24629287602, 81351102024, 137064943244, 1371082295364, 2489711201364, 8870066515082]