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.

A245817 Difference in size between rooted trees which are encoded as Matula-Goebel numbers A245821(n) and n: a(n) = A061775(A245821(n)) - A061775(n).

Table of values

n a(n)
1 0
2 0
3 0
4 0
5 0
6 1
7 0
8 0
9 -1
10 0
11 0
12 1
13 1
14 4
15 0
16 0
17 0
18 1
19 0
20 4
21 1
22 1
23 -1
24 0
25 -2
26 1
27 -1
28 1
29 0
30 1
31 0
32 4
33 -2
34 0
35 1
36 0
37 1
38 2
39 -1
40 1
41 1
42 2
43 4
44 1
45 0
46 3
47 0
48 0
49 1
50 -2
51 2
52 -1
53 0
54 -1
55 -2
56 1
57 2
58 0
59 0
60 1
61 1
62 3
63 0
64 0
65 0
66 -1
67 0
68 5
69 0
70 -2
71 4
72 2
73 1
74 3
75 0
76 0
77 -1
78 3
79 1
80 1
81 0
82 5
83 -1
84 1
85 -1
86 2
87 1
88 1
89 0
90 4
91 -1
92 0
93 -2
94 0
95 3
96 5
97 -2
98 -1
99 0

List of values

[0, 0, 0, 0, 0, 1, 0, 0, -1, 0, 0, 1, 1, 4, 0, 0, 0, 1, 0, 4, 1, 1, -1, 0, -2, 1, -1, 1, 0, 1, 0, 4, -2, 0, 1, 0, 1, 2, -1, 1, 1, 2, 4, 1, 0, 3, 0, 0, 1, -2, 2, -1, 0, -1, -2, 1, 2, 0, 0, 1, 1, 3, 0, 0, 0, -1, 0, 5, 0, -2, 4, 2, 1, 3, 0, 0, -1, 3, 1, 1, 0, 5, -1, 1, -1, 2, 1, 1, 0, 4, -1, 0, -2, 0, 3, 5, -2, -1, 0]