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.

A203951 Symmetric matrix based on (1,0,0,0,1,0,0,0,...), by antidiagonals.

Table of values

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

List of values

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