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.

A233320 Number A(n,k) of tilings of a k X n rectangle using trominoes of any shape; square array A(n,k), n>=0, k>=0, read by antidiagonals.

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 0
5 1
6 1
7 0
8 0
9 1
10 1
11 1
12 0
13 1
14 1
15 1
16 0
17 3
18 3
19 0
20 1
21 1
22 0
23 0
24 10
25 0
26 0
27 1
28 1
29 1
30 0
31 23
32 23
33 0
34 1
35 1
36 1
37 0
38 11
39 62
40 0
41 62
42 11
43 0
44 1
45 1
46 0
47 0
48 170
49 0
50 0
51 170
52 0
53 0
54 1
55 1
56 1
57 0
58 441
59 939
60 0
61 939
62 441
63 0
64 1
65 1
66 1
67 0
68 41
69 1173
70 0
71 8342
72 8342
73 0
74 1173
75 41
76 0
77 1

List of values

[1, 1, 1, 1, 0, 1, 1, 0, 0, 1, 1, 1, 0, 1, 1, 1, 0, 3, 3, 0, 1, 1, 0, 0, 10, 0, 0, 1, 1, 1, 0, 23, 23, 0, 1, 1, 1, 0, 11, 62, 0, 62, 11, 0, 1, 1, 0, 0, 170, 0, 0, 170, 0, 0, 1, 1, 1, 0, 441, 939, 0, 939, 441, 0, 1, 1, 1, 0, 41, 1173, 0, 8342, 8342, 0, 1173, 41, 0, 1]