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.
%I A200325 #7 Jul 22 2025 15:46:36 %S A200325 1,5,5,5,5,5,5,5,5,9,11,11,7,7,11,17,13,7,5,5,5 %N A200325 Number of 0..4 arrays x(0..n+2) of n+3 elements with zero n-1st differences. %C A200325 Column 4 of A200329 %e A200325 All solutions for n=10 %e A200325 ..0....3....0....4....4....0....4....2....1 %e A200325 ..4....3....0....0....0....4....4....2....1 %e A200325 ..0....3....0....1....4....3....4....2....1 %e A200325 ..1....3....0....3....3....1....4....2....1 %e A200325 ..3....3....0....3....1....1....4....2....1 %e A200325 ..3....3....0....2....1....2....4....2....1 %e A200325 ..2....3....0....2....2....2....4....2....1 %e A200325 ..2....3....0....3....2....1....4....2....1 %e A200325 ..3....3....0....3....1....1....4....2....1 %e A200325 ..3....3....0....1....1....3....4....2....1 %e A200325 ..1....3....0....0....3....4....4....2....1 %e A200325 ..0....3....0....4....4....0....4....2....1 %e A200325 ..4....3....0....0....0....4....4....2....1 %K A200325 nonn %O A200325 1,2 %A A200325 _R. H. Hardin_ Nov 16 2011