cp's OEIS Frontend

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.

A373115 Number weak ascent sequences of length 2n (prefixed with a zero) with exactly n weak ascents.

Table of values

n a(n)
0 1
1 0
2 0
3 1
4 35
5 1661
6 107002
7 9047970
8 972937247
9 129603346139
10 20934881571217
11 4029204458109445
12 910549073414709876
13 238643240329544375336
14 71772700696174395158056
15 24544642886642172762170933
16 9468192975202745545226891834
17 4090995487728206638560153282674

List of values

[1, 0, 0, 1, 35, 1661, 107002, 9047970, 972937247, 129603346139, 20934881571217, 4029204458109445, 910549073414709876, 238643240329544375336, 71772700696174395158056, 24544642886642172762170933, 9468192975202745545226891834, 4090995487728206638560153282674]

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

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