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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.

A370710 a(n) = 3^n * [x^n] Product_{k>=1} 1/(1 - 3*x^k)^(1/3).

Table of values

n a(n)
0 1
1 3
2 27
3 180
4 1431
5 10206
6 83025
7 641277
8 5264109
9 42896790
10 357649587
11 2989185039
12 25284805857
13 214547921451
14 1832454271926
15 15702526829196
16 135091225972926
17 1165383100947105
18 10081310266960155
19 87401262194470719
20 759320707197024909
21 6608561546767471227
22 57610976508944343963

List of values

[1, 3, 27, 180, 1431, 10206, 83025, 641277, 5264109, 42896790, 357649587, 2989185039, 25284805857, 214547921451, 1832454271926, 15702526829196, 135091225972926, 1165383100947105, 10081310266960155, 87401262194470719, 759320707197024909, 6608561546767471227, 57610976508944343963]

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

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