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.

A167366 Triangle read by rows, 2*A047999 - A097806 (signed) = twice Sierpinski's gasket - the signed pair sum operator.

Table of values

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

List of values

[1, 3, 1, 2, 1, 1, 2, 2, 3, 1, 2, 0, 0, 1, 1, 2, 2, 0, 0, 3, 1, 2, 0, 2, 0, 2, 1, 1, 2, 2, 2, 2, 2, 2, 3, 1, 2, 0, 0, 0, 0, 0, 0, 1, 1, 2, 2, 0, 0, 0, 0, 0, 0, 3, 1, 2, 0, 2, 0, 0, 0, 0, 0, 2, 1, 1, 2, 2, 2, 2, 0, 0, 0, 0, 2, 2, 3, 1, 2, 0, 0, 0, 2, 0, 0, 0, 2, 0, 0, 1, 1]