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.

A116170 Numbers k such that k concatenated with k+2 gives the product of two numbers which differ by 1.

Table of values

n a(n)
1 590
2 738
3 830
4 1080
5 4508
6 20660
7 29754
8 980300
9 6694218
10 49826988
11 117738578
12 131505858
13 132231404
14 176445054
15 177285320
16 247979808
17 252028388
18 335180054
19 336337790
20 404958680
21 406231130
22 431477468
23 499519478

List of values

[590, 738, 830, 1080, 4508, 20660, 29754, 980300, 6694218, 49826988, 117738578, 131505858, 132231404, 176445054, 177285320, 247979808, 252028388, 335180054, 336337790, 404958680, 406231130, 431477468, 499519478]

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

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