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.

A298972 Number of positive integers k < n such that n occurs in the Reverse-and-Add trajectory of k.

Table of values

n a(n)
0 0
1 0
2 1
3 0
4 2
5 0
6 1
7 0
8 3
9 0
10 1
11 2
12 2
13 0
14 1
15 0
16 4
17 0
18 1
19 0
20 0
21 0
22 4
23 0
24 0
25 0
26 0
27 0
28 0
29 0
30 0
31 0
32 0
33 5
34 0
35 0
36 0
37 0
38 0
39 0
40 0
41 0
42 0
43 0
44 8
45 0
46 0
47 0
48 0
49 0
50 0
51 0
52 0
53 0
54 0
55 6
56 0
57 0
58 0
59 0
60 0
61 0
62 0
63 0
64 0
65 0
66 11
67 0
68 0
69 0
70 0
71 0
72 0
73 0
74 0
75 0
76 0
77 11
78 0
79 0
80 0
81 0
82 0
83 0
84 0
85 0

List of values

[0, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 2, 2, 0, 1, 0, 4, 0, 1, 0, 0, 0, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 5, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 6, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 11, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 11, 0, 0, 0, 0, 0, 0, 0, 0]

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

Content is available under The OEIS End-User License Agreement.