cp's OEIS Frontend

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.

A219477 Number of 7Xn arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..3 7Xn array.

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%I A219477 #5 Jul 23 2025 00:30:41
%S A219477 120,3259,982456,208345624,37552353044,5432184254977,664221777830589
%N A219477 Number of 7Xn arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..3 7Xn array.
%C A219477 Row 7 of A219471
%e A219477 Some solutions for n=3
%e A219477 ..0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0
%e A219477 ..0..0..2....0..0..0....0..0..0....0..0..2....0..0..2....0..0..2....0..0..0
%e A219477 ..0..0..2....1..0..2....0..0..0....2..1..1....0..0..1....0..0..0....0..0..1
%e A219477 ..2..0..0....2..2..3....1..0..0....1..1..1....1..1..2....0..0..0....0..0..0
%e A219477 ..0..0..0....2..2..1....1..0..0....1..1..1....2..2..3....0..0..3....0..0..3
%e A219477 ..0..0..0....1..1..1....2..0..1....1..1..1....3..1..1....2..1..1....0..0..3
%e A219477 ..0..3..3....1..3..3....3..1..1....1..2..3....3..1..2....2..0..0....1..1..2
%K A219477 nonn
%O A219477 1,1
%A A219477 _R. H. Hardin_ Nov 20 2012