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.

A119081 Triangular numbers composed of digits {0,5,7}.

Table of values

n a(n)
1 55
2 5050
3 7750
4 70500
5 500500
6 50005000
7 5000050000
8 500000500000
9 7700750050575
10 50000005000000
11 5000000050000000
12 75075057775077570
13 500000000500000000
14 7550055000555057000
15 50000000005000000000
16 505750055750070750570
17 775077070557070757070

List of values

[55, 5050, 7750, 70500, 500500, 50005000, 5000050000, 500000500000, 7700750050575, 50000005000000, 5000000050000000, 75075057775077570, 500000000500000000, 7550055000555057000, 50000000005000000000, 505750055750070750570, 775077070557070757070]

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

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