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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.

A200271 Number of 0..7 arrays x(0..n+1) of n+2 elements with zero n-1st differences.

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%I A200271 #6 Jul 22 2025 15:46:08
%S A200271 1,8,16,36,64,112,118,228,236,574,958,2110,1434,4316,2560,8448,18834,
%T A200271 60888,38672,73250,15518,42050,48352,309524
%N A200271 Number of 0..7 arrays x(0..n+1) of n+2 elements with zero n-1st differences.
%C A200271 Column 7 of A200272
%e A200271 Some solutions for n=6
%e A200271 ..1....2....0....1....0....0....0....0....7....7....7....6....3....2....0....7
%e A200271 ..1....4....5....5....6....6....1....3....2....1....2....6....2....7....0....0
%e A200271 ..1....2....7....6....5....5....2....5....2....0....2....6....3....7....0....0
%e A200271 ..2....0....7....6....3....2....3....6....4....1....3....5....4....5....0....3
%e A200271 ..4....0....6....6....3....0....4....6....6....2....3....3....4....3....0....6
%e A200271 ..6....2....5....6....5....0....5....5....7....2....2....1....3....2....0....7
%e A200271 ..6....4....5....5....6....1....6....3....7....1....2....1....2....2....0....5
%e A200271 ..1....2....7....1....0....0....7....0....7....0....7....6....3....2....0....0
%K A200271 nonn
%O A200271 1,2
%A A200271 _R. H. Hardin_ Nov 15 2011

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