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.

A338210 Triangle of coefficients of perimeter polynomials for fixed polyominoes.

Table of values

n a(n)
0 1
1 0
2 0
3 0
4 0
5 1
6 0
7 0
8 0
9 0
10 0
11 0
12 2
13 0
14 0
15 0
16 0
17 0
18 0
19 0
20 4
21 2
22 0
23 0
24 0
25 0
26 0
27 0
28 0
29 0
30 9
31 8
32 2
33 0
34 0
35 0
36 0
37 0
38 0
39 0
40 0
41 1
42 20
43 28
44 12
45 2
46 0
47 0
48 0
49 0
50 0
51 0
52 0
53 0
54 0
55 4
56 54
57 80
58 60
59 16
60 2
61 0
62 0
63 0
64 0
65 0
66 0
67 0
68 0
69 0
70 0
71 22
72 136
73 252
74 228
75 100
76 20
77 2

List of values

[1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 4, 2, 0, 0, 0, 0, 0, 0, 0, 0, 9, 8, 2, 0, 0, 0, 0, 0, 0, 0, 0, 1, 20, 28, 12, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 54, 80, 60, 16, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 22, 136, 252, 228, 100, 20, 2]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.