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 A200897 #6 Jul 22 2025 15:59:36 %S A200897 33,13,1848,1329,219302,142698,28966191,19687441,4250955750, %T A200897 2868249876,653092745412,444880771844,102659474241588,68568844067091 %N A200897 Number of nX3 0..5 arrays with every row and column running average nondecreasing rightwards and downwards, and the number of instances of each value within one of each other. %C A200897 Column 3 of A200902 %e A200897 Some solutions for n=4 %e A200897 ..0..2..2....0..0..2....0..0..1....0..0..4....0..0..2....0..0..3....0..2..4 %e A200897 ..0..4..3....1..3..4....2..3..3....1..2..4....1..4..3....1..1..3....0..2..4 %e A200897 ..1..3..4....1..5..4....1..2..4....1..2..5....1..5..3....4..5..5....1..3..5 %e A200897 ..1..5..5....2..3..5....4..5..5....3..3..5....2..5..4....2..2..4....1..3..5 %K A200897 nonn %O A200897 1,1 %A A200897 _R. H. Hardin_ Nov 23 2011