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.

A165017 Consider the base-4 Kaprekar map n->K(n) defined in A165012. Sequence gives numbers belonging to cycles, including fixed points.

Table of values

n a(n)
1 0
2 30
3 126
4 138
5 201
6 570
7 765
8 2550
9 3369
10 3873
11 14565
12 41958
13 42966
14 54441
15 57333
16 62625
17 64641
18 171990
19 234405
20 254865
21 873129
22 954261
23 1004193
24 1036929
25 1044993
26 2788950
27 3489705
28 3755685
29 3833685
30 4083345
31 4165185
32 11140950
33 13978281

List of values

[0, 30, 126, 138, 201, 570, 765, 2550, 3369, 3873, 14565, 41958, 42966, 54441, 57333, 62625, 64641, 171990, 234405, 254865, 873129, 954261, 1004193, 1036929, 1044993, 2788950, 3489705, 3755685, 3833685, 4083345, 4165185, 11140950, 13978281]

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

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