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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.

A385841 a(n) = 1 + Sum_{k=0..n-1} k^3 * a(k) * a(n-1-k).

Table of values

n a(n)
0 1
1 1
2 2
3 18
4 505
5 32857
6 4141211
7 898723027
8 309170208201
9 158606268801081
10 115783226426053396
11 115899337245305115516
12 154378153899481307826141
13 266920063540268509322880013
14 586690612016923635703423527652
15 1610466268575965949949881680290412

List of values

[1, 1, 2, 18, 505, 32857, 4141211, 898723027, 309170208201, 158606268801081, 115783226426053396, 115899337245305115516, 154378153899481307826141, 266920063540268509322880013, 586690612016923635703423527652, 1610466268575965949949881680290412]

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

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