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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.

A200452 Number of -6..6 arrays x(0..n+1) of n+2 elements with zero sum and nonzero first and second differences.

Table of values

n a(n)
1 102
2 1148
3 12002
4 127988
5 1375006
6 14923636
7 163058296
8 1791564880
9 19771609900
10 219008350922
11 2433568582846
12 27114470656254
13 302815705130546
14 3388823734521446
15 37993433832232370
16 426648365048068166

List of values

[102, 1148, 12002, 127988, 1375006, 14923636, 163058296, 1791564880, 19771609900, 219008350922, 2433568582846, 27114470656254, 302815705130546, 3388823734521446, 37993433832232370, 426648365048068166]

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

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