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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.

A200267 Number of 0..3 arrays x(0..n+1) of n+2 elements with zero n-1st differences.

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%I A200267 #6 Jul 22 2025 15:45:48
%S A200267 1,4,4,6,8,8,8,16,4,10,12,36,20,48,8,20,28,70,28,154,8,32,40,174,16,
%T A200267 100,4,38,44,118
%N A200267 Number of 0..3 arrays x(0..n+1) of n+2 elements with zero n-1st differences.
%C A200267 Column 3 of A200272
%e A200267 All solutions for n=6
%e A200267 ..1....2....2....1....1....3....2....0
%e A200267 ..0....3....1....1....2....3....2....0
%e A200267 ..1....2....2....1....1....3....2....0
%e A200267 ..2....1....3....1....0....3....2....0
%e A200267 ..2....1....3....1....0....3....2....0
%e A200267 ..1....2....2....1....1....3....2....0
%e A200267 ..0....3....1....1....2....3....2....0
%e A200267 ..1....2....2....1....1....3....2....0
%K A200267 nonn
%O A200267 1,2
%A A200267 _R. H. Hardin_ Nov 15 2011

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