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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.

A367332 a(n) = 27^n * Sum_{k=0..n} binomial(1/3, k)^2.

Table of values

n a(n)
0 1
1 30
2 819
3 22188
4 599976
5 16212420
6 437948784
7 11828393820
8 319437445365
9 8626198419930
10 232935493710231
11 6289845008414760
12 169838331029620344
13 4585907100958922088
14 123825507087143633976
15 3343423515649756142760
16 90275493748778836055964

List of values

[1, 30, 819, 22188, 599976, 16212420, 437948784, 11828393820, 319437445365, 8626198419930, 232935493710231, 6289845008414760, 169838331029620344, 4585907100958922088, 123825507087143633976, 3343423515649756142760, 90275493748778836055964]

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

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