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.

A345197 Concatenation of square matrices A(n), each read by rows, where A(n)(k,i) is the number of compositions of n of length k with alternating sum i, where 1 <= k <= n, and i ranges from -n + 2 to n in steps of 2.

Table of values

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

List of values

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