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.

A329722 a(n) = Sum_{k=0..n} ((binomial(n+2k,2n-k)*binomial(n,k)) mod 2).

Table of values

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

List of values

[1, 1, 1, 2, 1, 1, 2, 1, 1, 1, 1, 2, 2, 2, 1, 3, 1, 1, 1, 2, 1, 1, 2, 1, 2, 2, 2, 4, 1, 1, 3, 4, 1, 1, 1, 2, 1, 1, 2, 1, 1, 1, 1, 2, 2, 2, 1, 3, 2, 2, 2, 4, 2, 2, 4, 2, 1, 1, 1, 2, 3, 3, 4, 7, 1, 1, 1, 2, 1, 1, 2, 1, 1, 1, 1, 2, 2, 2, 1, 3, 1, 1, 1, 2, 1, 1, 2, 1, 2, 2, 2, 4, 1, 1]