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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.

A209155 Triangle read by rows: numerators of Stirling-like triangle of rational numbers.

Table of values

n a(n)
1 -1
2 -1
3 1
4 -1
5 3
6 -1
7 -1
8 1
9 -2
10 1
11 -1
12 5
13 -5
14 5
15 -1
16 -1
17 1
18 -5
19 5
20 -3
21 1
22 -1
23 7
24 -7
25 35
26 -7
27 7
28 -1
29 -1
30 4
31 -28
32 7
33 -14
34 14
35 -4
36 1

List of values

[-1, -1, 1, -1, 3, -1, -1, 1, -2, 1, -1, 5, -5, 5, -1, -1, 1, -5, 5, -3, 1, -1, 7, -7, 35, -7, 7, -1, -1, 4, -28, 7, -14, 14, -4, 1]