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.

A124576 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 (1,4,4,...) and super- and subdiagonals (1,1,1,...).

Table of values

n a(n)
1 1
2 1
3 1
4 2
5 5
6 1
7 7
8 23
9 9
10 1
11 30
12 108
13 60
14 13
15 1
16 138
17 522
18 361
19 113
20 17
21 1
22 660
23 2587
24 2079
25 830
26 182
27 21
28 1
29 3247
30 13087
31 11733
32 5581
33 1579
34 267
35 25
36 1
37 16334
38 67328
39 65600
40 35636
41 12164
42 2672
43 368
44 29
45 1
46 83662
47 351246
48 365364
49 220308
50 86964
51 23220
52 4173

List of values

[1, 1, 1, 2, 5, 1, 7, 23, 9, 1, 30, 108, 60, 13, 1, 138, 522, 361, 113, 17, 1, 660, 2587, 2079, 830, 182, 21, 1, 3247, 13087, 11733, 5581, 1579, 267, 25, 1, 16334, 67328, 65600, 35636, 12164, 2672, 368, 29, 1, 83662, 351246, 365364, 220308, 86964, 23220, 4173]