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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.

A385837 a(n) = 1 + Sum_{k=0..n-1} (1 + k^4) * a(k) * a(n-1-k).

Table of values

n a(n)
0 1
1 2
2 7
3 135
4 11472
5 2983290
6 1876558882
7 2439543938823
8 5867113337771476
9 24055177364999767957
10 157922269330003687462469
11 1579854504025376907525660119
12 23136970006572094830720177877037
13 479860765871358769352536441406761329
14 13707222893156109310485886790873337444816

List of values

[1, 2, 7, 135, 11472, 2983290, 1876558882, 2439543938823, 5867113337771476, 24055177364999767957, 157922269330003687462469, 1579854504025376907525660119, 23136970006572094830720177877037, 479860765871358769352536441406761329, 13707222893156109310485886790873337444816]

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

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