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.

A112555 Triangle T, read by rows, such that the m-th matrix power satisfies T^m = I + m*(T - I) and consequently the matrix logarithm satisfies log(T) = T - I, where I is the identity matrix.

Table of values

n a(n)
0 1
1 1
2 1
3 -1
4 0
5 1
6 1
7 1
8 1
9 1
10 -1
11 -2
12 -2
13 0
14 1
15 1
16 3
17 4
18 2
19 1
20 1
21 -1
22 -4
23 -7
24 -6
25 -3
26 0
27 1
28 1
29 5
30 11
31 13
32 9
33 3
34 1
35 1
36 -1
37 -6
38 -16
39 -24
40 -22
41 -12
42 -4
43 0
44 1
45 1
46 7
47 22
48 40
49 46
50 34
51 16
52 4
53 1
54 1
55 -1
56 -8
57 -29
58 -62
59 -86
60 -80
61 -50
62 -20
63 -5
64 0
65 1
66 1
67 9
68 37
69 91
70 148
71 166
72 130
73 70
74 25
75 5
76 1
77 1
78 -1
79 -10
80 -46
81 -128
82 -239
83 -314
84 -296
85 -200
86 -95
87 -30
88 -6
89 0

List of values

[1, 1, 1, -1, 0, 1, 1, 1, 1, 1, -1, -2, -2, 0, 1, 1, 3, 4, 2, 1, 1, -1, -4, -7, -6, -3, 0, 1, 1, 5, 11, 13, 9, 3, 1, 1, -1, -6, -16, -24, -22, -12, -4, 0, 1, 1, 7, 22, 40, 46, 34, 16, 4, 1, 1, -1, -8, -29, -62, -86, -80, -50, -20, -5, 0, 1, 1, 9, 37, 91, 148, 166, 130, 70, 25, 5, 1, 1, -1, -10, -46, -128, -239, -314, -296, -200, -95, -30, -6, 0]