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.

A278657 Number A(n,k) of tilings of a k X n rectangle using pentominoes of any shape and monominoes; 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 1
5 1
6 1
7 1
8 1
9 1
10 1
11 1
12 1
13 1
14 1
15 1
16 1
17 7
18 7
19 1
20 1
21 1
22 2
23 25
24 50
25 25
26 2
27 1
28 1
29 3
30 50
31 311
32 311
33 50
34 3
35 1
36 1
37 4
38 155
39 1954
40 4101
41 1954
42 155
43 4
44 1
45 1
46 5
47 508
48 11914
49 56864
50 56864
51 11914
52 508
53 5
54 1
55 1
56 6
57 1343
58 76003
59 728857
60 1532496
61 728857
62 76003
63 1343
64 6
65 1

List of values

[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 7, 7, 1, 1, 1, 2, 25, 50, 25, 2, 1, 1, 3, 50, 311, 311, 50, 3, 1, 1, 4, 155, 1954, 4101, 1954, 155, 4, 1, 1, 5, 508, 11914, 56864, 56864, 11914, 508, 5, 1, 1, 6, 1343, 76003, 728857, 1532496, 728857, 76003, 1343, 6, 1]