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.

A274835 Number A(n,k) of set partitions of [n] such that the difference between each element and its block index is a multiple of k; square array A(n,k), n>=0, k>=0, read by antidiagonals.

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 1
5 1
6 1
7 1
8 2
9 1
10 1
11 1
12 1
13 5
14 1
15 1
16 1
17 1
18 2
19 15
20 1
21 1
22 1
23 1
24 1
25 3
26 52
27 1
28 1
29 1
30 1
31 1
32 2
33 7
34 203
35 1
36 1
37 1
38 1
39 1
40 1
41 3
42 14
43 877
44 1
45 1
46 1
47 1
48 1
49 1
50 2
51 4
52 39
53 4140
54 1
55 1
56 1
57 1
58 1
59 1
60 1
61 3
62 9
63 95
64 21147
65 1
66 1
67 1
68 1
69 1
70 1
71 1
72 2
73 4
74 18
75 304
76 115975
77 1

List of values

[1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 5, 1, 1, 1, 1, 2, 15, 1, 1, 1, 1, 1, 3, 52, 1, 1, 1, 1, 1, 2, 7, 203, 1, 1, 1, 1, 1, 1, 3, 14, 877, 1, 1, 1, 1, 1, 1, 2, 4, 39, 4140, 1, 1, 1, 1, 1, 1, 1, 3, 9, 95, 21147, 1, 1, 1, 1, 1, 1, 1, 2, 4, 18, 304, 115975, 1]