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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.

A357871 Total number of n-multisets of semi-Dyck paths from (0,0) to (n,n-2*j) for j=0..floor(n/2).

Table of values

n a(n)
0 1
1 1
2 2
3 5
4 21
5 183
6 3424
7 155833
8 25962389
9 10152021001
10 18355563410823
11 94826525443572702
12 1720192707342762602561
13 135432808172830648285721490
14 25492564910167901918236137649748
15 28315683468644276652408152922412713937
16 65407605920313732627652296139090181364409413

List of values

[1, 1, 2, 5, 21, 183, 3424, 155833, 25962389, 10152021001, 18355563410823, 94826525443572702, 1720192707342762602561, 135432808172830648285721490, 25492564910167901918236137649748, 28315683468644276652408152922412713937, 65407605920313732627652296139090181364409413]

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

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