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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.

A227850 Number of Dyck paths of semilength n*(4*n+1) in which the run length sequence is a permutation of {1,...,4*n}.

Table of values

n a(n)
0 1
1 4
2 1248
3 5401472
4 114070692352
5 7593330670240768

List of values

[1, 4, 1248, 5401472, 114070692352, 7593330670240768]

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

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