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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.

A113124 Denominator of next-best approximation to harmonic numbers. a(n) = Denominator of (A055573(n)-1)th convergent of n-th harmonic number, Sum_{k=1..n} 1/k.

Table of values

n a(n)
1 1
2 1
3 1
4 1
5 7
6 9
7 27
8 39
9 649
10 901
11 4729
12 6821
13 52783
14 27043
15 51067
16 273281
17 1043807
18 271979
19 11378119
20 6452207
21 141997
22 377141
23 42943389
24 58933037
25 2653340203
26 1122077597
27 21027833867
28 18159496967
29 1090528730477
30 236529224117

List of values

[1, 1, 1, 1, 7, 9, 27, 39, 649, 901, 4729, 6821, 52783, 27043, 51067, 273281, 1043807, 271979, 11378119, 6452207, 141997, 377141, 42943389, 58933037, 2653340203, 1122077597, 21027833867, 18159496967, 1090528730477, 236529224117]

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

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