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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.

A346937 a(n) = Sum_{d|n} mu(n/d) * binomial(6*d,d) / (5*d+1).

Table of values

n a(n)
1 1
2 5
3 50
4 500
5 5480
6 62776
7 749397
8 9203128
9 115607259
10 1478308780
11 19180049927
12 251857056364
13 3340843549854
14 44700484300317
15 602574657421585
16 8175951649914160
17 111572030260242089
18 1530312970224714489
19 21085148778264281864
20 291705220703240850760
21 4050527291832419432577

List of values

[1, 5, 50, 500, 5480, 62776, 749397, 9203128, 115607259, 1478308780, 19180049927, 251857056364, 3340843549854, 44700484300317, 602574657421585, 8175951649914160, 111572030260242089, 1530312970224714489, 21085148778264281864, 291705220703240850760, 4050527291832419432577]

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

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