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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.

A385838 a(n) = 1 + Sum_{k=0..n-1} (1 + k^5) * a(k) * a(n-1-k).

Table of values

n a(n)
0 1
1 2
2 7
3 247
4 61006
5 62715298
6 196236522104
7 1526720482525833
8 25665699044532909262
9 841116296816234980686001
10 49670440804927429155777517363
11 4967242766473223753247263215133503
12 799999284003076533259467892632499306811
13 199068621859048073152067295737349123675521467

List of values

[1, 2, 7, 247, 61006, 62715298, 196236522104, 1526720482525833, 25665699044532909262, 841116296816234980686001, 49670440804927429155777517363, 4967242766473223753247263215133503, 799999284003076533259467892632499306811, 199068621859048073152067295737349123675521467]

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

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