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.

A124574 Triangle read by rows: row n is the first row of the matrix M[n]^(n-1), where M[n] is the n X n tridiagonal matrix with main diagonal (3,4,4,...) and super- and subdiagonals (1,1,1,...).

Table of values

n a(n)
1 1
2 3
3 1
4 10
5 7
6 1
7 37
8 39
9 11
10 1
11 150
12 204
13 84
14 15
15 1
16 654
17 1050
18 555
19 145
20 19
21 1
22 3012
23 5409
24 3415
25 1154
26 222
27 23
28 1
29 14445
30 28063
31 20223
32 8253
33 2065
34 315
35 27
36 1
37 71398
38 146920
39 117208
40 55300
41 16828
42 3352
43 424
44 31
45 1
46 361114
47 776286
48 671052
49 355236
50 125964
51 30660
52 5079
53 549
54 35
55 1

List of values

[1, 3, 1, 10, 7, 1, 37, 39, 11, 1, 150, 204, 84, 15, 1, 654, 1050, 555, 145, 19, 1, 3012, 5409, 3415, 1154, 222, 23, 1, 14445, 28063, 20223, 8253, 2065, 315, 27, 1, 71398, 146920, 117208, 55300, 16828, 3352, 424, 31, 1, 361114, 776286, 671052, 355236, 125964, 30660, 5079, 549, 35, 1]