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.

A078937 Square of lower triangular matrix of A056857 (successive equalities in set partitions of n).

Table of values

n a(n)
0 1
1 2
2 1
3 6
4 4
5 1
6 22
7 18
8 6
9 1
10 94
11 88
12 36
13 8
14 1
15 454
16 470
17 220
18 60
19 10
20 1
21 2430
22 2724
23 1410
24 440
25 90
26 12
27 1
28 14214
29 17010
30 9534
31 3290
32 770
33 126
34 14
35 1
36 89918
37 113712
38 68040
39 25424
40 6580
41 1232
42 168
43 16
44 1
45 610182
46 809262
47 511704
48 204120
49 57204
50 11844
51 1848
52 216
53 18
54 1

List of values

[1, 2, 1, 6, 4, 1, 22, 18, 6, 1, 94, 88, 36, 8, 1, 454, 470, 220, 60, 10, 1, 2430, 2724, 1410, 440, 90, 12, 1, 14214, 17010, 9534, 3290, 770, 126, 14, 1, 89918, 113712, 68040, 25424, 6580, 1232, 168, 16, 1, 610182, 809262, 511704, 204120, 57204, 11844, 1848, 216, 18, 1]