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.

A258850 A(n,k) = k-th pi-based arithmetic derivative of n; square array A(n,k), n>=0, k>=0, read by antidiagonals.

Table of values

n a(n)
0 0
1 0
2 1
3 0
4 0
5 2
6 0
7 0
8 1
9 3
10 0
11 0
12 0
13 2
14 4
15 0
16 0
17 0
18 1
19 4
20 5
21 0
22 0
23 0
24 0
25 4
26 3
27 6
28 0
29 0
30 0
31 0
32 4
33 2
34 7
35 7
36 0
37 0
38 0
39 0
40 4
41 1
42 4
43 4
44 8
45 0
46 0
47 0
48 0
49 4
50 0
51 4
52 4
53 12
54 9
55 0
56 0
57 0
58 0
59 4
60 0
61 4
62 4
63 20
64 12
65 10
66 0
67 0
68 0
69 0
70 4
71 0
72 4
73 4
74 32
75 20
76 11
77 11
78 0
79 0
80 0
81 0
82 4
83 0
84 4
85 4
86 80
87 32
88 5
89 5
90 12

List of values

[0, 0, 1, 0, 0, 2, 0, 0, 1, 3, 0, 0, 0, 2, 4, 0, 0, 0, 1, 4, 5, 0, 0, 0, 0, 4, 3, 6, 0, 0, 0, 0, 4, 2, 7, 7, 0, 0, 0, 0, 4, 1, 4, 4, 8, 0, 0, 0, 0, 4, 0, 4, 4, 12, 9, 0, 0, 0, 0, 4, 0, 4, 4, 20, 12, 10, 0, 0, 0, 0, 4, 0, 4, 4, 32, 20, 11, 11, 0, 0, 0, 0, 4, 0, 4, 4, 80, 32, 5, 5, 12]