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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.

A200550 Number of -5..5 arrays x(0..n+1) of n+2 elements with zero sum and nonzero second differences.

Table of values

n a(n)
1 80
2 836
3 7778
4 75792
5 737460
6 7286542
7 72366820
8 723237026
9 7258296910
10 73127883596
11 739101010202
12 7490787201124
13 76099633989974
14 774719436417776
15 7901415122713726
16 80719023935569240
17 825814487838111514

List of values

[80, 836, 7778, 75792, 737460, 7286542, 72366820, 723237026, 7258296910, 73127883596, 739101010202, 7490787201124, 76099633989974, 774719436417776, 7901415122713726, 80719023935569240, 825814487838111514]

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

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