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.

A099009 Fixed points of the Kaprekar mapping f(n) = n' - n'', where in n' the digits of n are arranged in descending, in n'' in ascending order.

Table of values

n a(n)
1 0
2 495
3 6174
4 549945
5 631764
6 63317664
7 97508421
8 554999445
9 864197532
10 6333176664
11 9753086421
12 9975084201
13 86431976532
14 555499994445
15 633331766664
16 975330866421
17 997530864201
18 999750842001
19 8643319766532
20 63333317666664

List of values

[0, 495, 6174, 549945, 631764, 63317664, 97508421, 554999445, 864197532, 6333176664, 9753086421, 9975084201, 86431976532, 555499994445, 633331766664, 975330866421, 997530864201, 999750842001, 8643319766532, 63333317666664]