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.

A119216 Triangular numbers composed of digits {4,7,8}.

Table of values

n a(n)
1 78
2 8778
3 448878
4 887778
5 7478778
6 88877778
7 8888777778
8 44847878778
9 747488474778
10 888887777778
11 88888877777778
12 8888888777777778
13 888888887777777778
14 7778777484477877878
15 88888888877777777778
16 7444484774887874784778
17 8888888888777777777778

List of values

[78, 8778, 448878, 887778, 7478778, 88877778, 8888777778, 44847878778, 747488474778, 888887777778, 88888877777778, 8888888777777778, 888888887777777778, 7778777484477877878, 88888888877777777778, 7444484774887874784778, 8888888888777777777778]