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.

A200054 Number of -5..5 arrays x(0..n-1) of n elements with zero sum and elements alternately strictly increasing and strictly decreasing.

Table of values

n a(n)
1 1
2 10
3 56
4 324
5 1948
6 11962
7 74338
8 466548
9 2947742
10 18746754
11 119701782
12 767860824
13 4938868628
14 31876070432
15 206122332340
16 1336425077996
17 8676994345132
18 56457974059982
19 367738443114696
20 2399500033305708

List of values

[1, 10, 56, 324, 1948, 11962, 74338, 466548, 2947742, 18746754, 119701782, 767860824, 4938868628, 31876070432, 206122332340, 1336425077996, 8676994345132, 56457974059982, 367738443114696, 2399500033305708]

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

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