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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.

A130414 Denominators of partial sums for a series for Pi/3.

Table of values

n a(n)
0 1
1 18
2 45
3 1260
4 945
5 20790
6 135135
7 1081080
8 765765
9 87297210
10 43648605
11 4015671660
12 5019589575
13 30117537450
14 436704293025
15 216605329340400
16 13537833083775
17 27075666167550
18 500899824099675
19 2003599296398700

List of values

[1, 18, 45, 1260, 945, 20790, 135135, 1081080, 765765, 87297210, 43648605, 4015671660, 5019589575, 30117537450, 436704293025, 216605329340400, 13537833083775, 27075666167550, 500899824099675, 2003599296398700]

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

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