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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.

A224385 Number of n X n 0..3 arrays with diagonals and antidiagonals unimodal and rows nondecreasing.

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%I A224385 #7 Jul 23 2025 05:08:21
%S A224385 4,100,6094,497958,45648753,4364554008,424124440444,41437298593764,
%T A224385 4056267677083719,397503667576768219
%N A224385 Number of n X n 0..3 arrays with diagonals and antidiagonals unimodal and rows nondecreasing.
%C A224385 Diagonal of A224391
%e A224385 Some solutions for n=3
%e A224385 ..1..1..1....1..1..2....1..2..3....0..0..1....1..2..2....1..3..3....1..1..1
%e A224385 ..0..2..2....2..2..3....3..3..3....2..2..3....2..3..3....2..3..3....1..2..2
%e A224385 ..2..3..3....0..2..2....1..1..2....1..2..2....0..0..1....0..1..3....0..2..3
%K A224385 nonn
%O A224385 1,1
%A A224385 _R. H. Hardin_ Apr 05 2013

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