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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.

A360518 Numbers j such that there exists a number i <= j with the property that i+j and i*j have the same decimal digits in reverse order.

Table of values

n a(n)
1 2
2 9
3 24
4 47
5 497
6 4997
7 49997
8 499997
9 4999997
10 49999997
11 499999997
12 4999999997
13 49999999997
14 499999999997
15 4999999999997
16 49999999999997
17 499999999999997
18 4999999999999997
19 49999999999999997
20 499999999999999997
21 4999999999999999997
22 49999999999999999997

List of values

[2, 9, 24, 47, 497, 4997, 49997, 499997, 4999997, 49999997, 499999997, 4999999997, 49999999997, 499999999997, 4999999999997, 49999999999997, 499999999999997, 4999999999999997, 49999999999999997, 499999999999999997, 4999999999999999997, 49999999999999999997]

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

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