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.

A173772 a(n) = (4*10^n + 23)/9.

Table of values

n a(n)
1 7
2 47
3 447
4 4447
5 44447
6 444447
7 4444447
8 44444447
9 444444447
10 4444444447
11 44444444447
12 444444444447
13 4444444444447
14 44444444444447
15 444444444444447
16 4444444444444447
17 44444444444444447
18 444444444444444447
19 4444444444444444447
20 44444444444444444447
21 444444444444444444447

List of values

[7, 47, 447, 4447, 44447, 444447, 4444447, 44444447, 444444447, 4444444447, 44444444447, 444444444447, 4444444444447, 44444444444447, 444444444444447, 4444444444444447, 44444444444444447, 444444444444444447, 4444444444444444447, 44444444444444444447, 444444444444444444447]

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

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