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.

A138056 Levels of substitution A103684 (based on the morphism f: 1->{1,2}, 2->{1,3}, 3->{3}) like Markov substitution taken as polynomials p(x,n)]and coefficients of the differential polynomials returned as q(x,n) =dp(x,n)dx coefficients (first zero omitted).

Table of values

n a(n)
1 2
2 2
3 2
4 9
5 2
6 2
7 9
8 4
9 10
10 6
11 2
12 2
13 9
14 4
15 10
16 6
17 7
18 16
19 9
20 30
21 11
22 24
23 2
24 2
25 9
26 4
27 10
28 6
29 7
30 16
31 9
32 30
33 11
34 24
35 13
36 28
37 15
38 48
39 17
40 36
41 19
42 20
43 42
44 22
45 69
46 2
47 2
48 9
49 4
50 10
51 6
52 7
53 16
54 9
55 30
56 11
57 24
58 13
59 28
60 15
61 48
62 17
63 36
64 19
65 20
66 42
67 22
68 69
69 24
70 50
71 26
72 81
73 28
74 58
75 30
76 31
77 64
78 33
79 102
80 35

List of values

[2, 2, 2, 9, 2, 2, 9, 4, 10, 6, 2, 2, 9, 4, 10, 6, 7, 16, 9, 30, 11, 24, 2, 2, 9, 4, 10, 6, 7, 16, 9, 30, 11, 24, 13, 28, 15, 48, 17, 36, 19, 20, 42, 22, 69, 2, 2, 9, 4, 10, 6, 7, 16, 9, 30, 11, 24, 13, 28, 15, 48, 17, 36, 19, 20, 42, 22, 69, 24, 50, 26, 81, 28, 58, 30, 31, 64, 33, 102, 35]