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.

A116163 Numbers k such that k concatenated with k+1 gives the product of two numbers which differ by 1.

Table of values

n a(n)
1 1
2 5
3 61
4 65479
5 84289
6 106609
7 225649
8 275599
9 453589
10 1869505
11 2272555
12 2738291
13 3221951
14 1667833021
15 2475062749
16 2525062249
17 3500010739
18 9032526511
19 9225507211
20 1753016898055
21 1860598847399
22 3233666953849
23 3379207972471
24 5632076031055
25 5823639407489

List of values

[1, 5, 61, 65479, 84289, 106609, 225649, 275599, 453589, 1869505, 2272555, 2738291, 3221951, 1667833021, 2475062749, 2525062249, 3500010739, 9032526511, 9225507211, 1753016898055, 1860598847399, 3233666953849, 3379207972471, 5632076031055, 5823639407489]

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

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