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.

A038763 Triangular matrix arising in enumeration of catafusenes, read by rows.

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 4
5 3
6 1
7 7
8 15
9 9
10 1
11 10
12 36
13 54
14 27
15 1
16 13
17 66
18 162
19 189
20 81
21 1
22 16
23 105
24 360
25 675
26 648
27 243
28 1
29 19
30 153
31 675
32 1755
33 2673
34 2187
35 729
36 1
37 22
38 210
39 1134
40 3780
41 7938
42 10206
43 7290
44 2187
45 1
46 25
47 276
48 1764
49 7182
50 19278
51 34020
52 37908
53 24057
54 6561
55 1
56 28
57 351
58 2592
59 12474
60 40824
61 91854
62 139968
63 137781
64 78732
65 19683

List of values

[1, 1, 1, 1, 4, 3, 1, 7, 15, 9, 1, 10, 36, 54, 27, 1, 13, 66, 162, 189, 81, 1, 16, 105, 360, 675, 648, 243, 1, 19, 153, 675, 1755, 2673, 2187, 729, 1, 22, 210, 1134, 3780, 7938, 10206, 7290, 2187, 1, 25, 276, 1764, 7182, 19278, 34020, 37908, 24057, 6561, 1, 28, 351, 2592, 12474, 40824, 91854, 139968, 137781, 78732, 19683]