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.

A268830 Square array A(r,c): A(0,c) = c, A(r,0) = 0, A(r>=1,c>=1) = 1+A(r-1,A268718(c)-1) = 1 + A(r-1, A003188(A006068(c)-1)), read by descending antidiagonals.

Table of values

n a(n)
0 0
1 1
2 0
3 2
4 1
5 0
6 3
7 4
8 1
9 0
10 4
11 2
12 3
13 1
14 0
15 5
16 6
17 2
18 3
19 1
20 0
21 6
22 8
23 9
24 2
25 3
26 1
27 0
28 7
29 3
30 8
31 9
32 2
33 3
34 1
35 0
36 8
37 7
38 5
39 5
40 6
41 2
42 3
43 1
44 0
45 9
46 10
47 4
48 4
49 7
50 8
51 2
52 3
53 1
54 0
55 10
56 12
57 13
58 6
59 4
60 6
61 7
62 2
63 3
64 1
65 0
66 11
67 15
68 12
69 13
70 5
71 4
72 6
73 7
74 2
75 3
76 1
77 0
78 12
79 11
80 17
81 17
82 18
83 5
84 4
85 6
86 7
87 2
88 3
89 1
90 0
91 13
92 5
93 16
94 16
95 19
96 20
97 5
98 4
99 6
100 7
101 2
102 3
103 1
104 0
105 14
106 13
107 7
108 18
109 16
110 18
111 19
112 5
113 4
114 6
115 7
116 2
117 3
118 1
119 0

List of values

[0, 1, 0, 2, 1, 0, 3, 4, 1, 0, 4, 2, 3, 1, 0, 5, 6, 2, 3, 1, 0, 6, 8, 9, 2, 3, 1, 0, 7, 3, 8, 9, 2, 3, 1, 0, 8, 7, 5, 5, 6, 2, 3, 1, 0, 9, 10, 4, 4, 7, 8, 2, 3, 1, 0, 10, 12, 13, 6, 4, 6, 7, 2, 3, 1, 0, 11, 15, 12, 13, 5, 4, 6, 7, 2, 3, 1, 0, 12, 11, 17, 17, 18, 5, 4, 6, 7, 2, 3, 1, 0, 13, 5, 16, 16, 19, 20, 5, 4, 6, 7, 2, 3, 1, 0, 14, 13, 7, 18, 16, 18, 19, 5, 4, 6, 7, 2, 3, 1, 0]