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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.

A116140 Numbers k such that k concatenated with k-3 gives the product of two numbers which differ by 9.

Table of values

n a(n)
1 5
2 7403
3 8885
4 12563
5 41675
6 54239
7 2353623
8 2650793
9 7717533
10 527390351115
11 567933643889
12 627121279653
13 671264212463
14 1335723019653517755
15 2049430589972661489
16 2995303155542192885
17 4026214090447622723

List of values

[5, 7403, 8885, 12563, 41675, 54239, 2353623, 2650793, 7717533, 527390351115, 567933643889, 627121279653, 671264212463, 1335723019653517755, 2049430589972661489, 2995303155542192885, 4026214090447622723]

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

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