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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.

A375524 a(n) = denominator of Sum_{i=1..n} 1/A171397(i).

Table of values

n a(n)
1 1
2 2
3 6
4 12
5 60
6 20
7 140
8 280
9 2520
10 27720
11 27720
12 360360
13 360360
14 360360
15 720720
16 12252240
17 4084080
18 77597520
19 77597520
20 77597520
21 1784742960
22 1784742960
23 8923714800
24 8923714800
25 80313433200
26 11473347600
27 332727080400
28 332727080400
29 10314539492400
30 937685408400
31 937685408400

List of values

[1, 2, 6, 12, 60, 20, 140, 280, 2520, 27720, 27720, 360360, 360360, 360360, 720720, 12252240, 4084080, 77597520, 77597520, 77597520, 1784742960, 1784742960, 8923714800, 8923714800, 80313433200, 11473347600, 332727080400, 332727080400, 10314539492400, 937685408400, 937685408400]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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