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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.

A178252 Triangle T(n,m) read by rows: the numerator of the coefficient [x^m] of the umbral inverse Bernoulli polynomials B^{-1}(n,x), 0 <= m <= n.

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 1
5 1
6 1
7 1
8 3
9 1
10 1
11 1
12 2
13 2
14 1
15 1
16 1
17 5
18 10
19 5
20 1
21 1
22 1
23 3
24 5
25 5
26 3
27 1
28 1
29 1
30 7
31 7
32 35
33 7
34 7
35 1
36 1
37 1
38 4
39 28
40 14
41 14
42 28
43 4
44 1
45 1
46 1
47 9
48 12
49 21
50 126
51 21
52 12
53 9
54 1
55 1
56 1
57 5
58 15
59 30
60 42
61 42
62 30
63 15
64 5
65 1
66 1
67 1
68 11
69 55
70 165
71 66
72 77
73 66
74 165
75 55
76 11
77 1
78 1
79 1
80 6
81 22
82 55
83 99
84 132
85 132
86 99
87 55
88 22
89 6
90 1

List of values

[1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 1, 1, 2, 2, 1, 1, 1, 5, 10, 5, 1, 1, 1, 3, 5, 5, 3, 1, 1, 1, 7, 7, 35, 7, 7, 1, 1, 1, 4, 28, 14, 14, 28, 4, 1, 1, 1, 9, 12, 21, 126, 21, 12, 9, 1, 1, 1, 5, 15, 30, 42, 42, 30, 15, 5, 1, 1, 1, 11, 55, 165, 66, 77, 66, 165, 55, 11, 1, 1, 1, 6, 22, 55, 99, 132, 132, 99, 55, 22, 6, 1]