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.

A200189 Number of -5..5 arrays x(0..n-1) of n elements with zero sum, adjacent elements differing by more than one, and elements alternately increasing and decreasing.

Table of values

n a(n)
1 1
2 10
3 44
4 242
5 1298
6 7266
7 40632
8 231916
9 1320876
10 7630236
11 43951298
12 255926506
13 1485664226
14 8700154180
15 50792100530
16 298703878402
17 1751415860436
18 10333766393384
19 60797757383394
20 359661008763242
21 2121869963574120

List of values

[1, 10, 44, 242, 1298, 7266, 40632, 231916, 1320876, 7630236, 43951298, 255926506, 1485664226, 8700154180, 50792100530, 298703878402, 1751415860436, 10333766393384, 60797757383394, 359661008763242, 2121869963574120]

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

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