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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.

A200164 Number of -7..7 arrays x(0..n-1) of n elements with nonzero sum and with zero through n-1 differences all nonzero.

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%I A200164 #6 Jul 22 2025 15:43:00
%S A200164 14,168,2180,27160,336992,4141212,50917674,624074768
%N A200164 Number of -7..7 arrays x(0..n-1) of n elements with nonzero sum and with zero through n-1 differences all nonzero.
%C A200164 Column 7 of A200165
%e A200164 Some solutions for n=5
%e A200164 .-3....4....1...-7...-3...-3...-3....1....1....1...-7....5...-7...-7...-4...-7
%e A200164 ..2...-6...-7....6...-6...-4...-7...-1...-4....7....3....4....7...-5....4...-3
%e A200164 .-3...-2...-5...-3...-5....2....1...-7....3....4...-2...-3...-7....2...-7...-1
%e A200164 ..6...-7....1...-1...-3...-4....3....6....2...-1....2....4...-4...-7...-1....6
%e A200164 ..2...-1...-1...-7....4....7....4...-1...-6...-3...-7...-6....6...-6...-3...-7
%K A200164 nonn
%O A200164 1,1
%A A200164 _R. H. Hardin_ Nov 13 2011

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