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A208464 Number of nX5 nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to more than two of its immediate leftward or upward or right-upward antidiagonal neighbors.

%I A208464 #7 Jul 22 2025 21:22:36
%S A208464 52,113458,1358524513,50996571454200,4585512913250157737,
%T A208464 838683310903953794594668,279322601688949336349340289673,
%U A208464 156351438264428644652281607036854772
%N A208464 Number of nX5 nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to more than two of its immediate leftward or upward or right-upward antidiagonal neighbors.
%C A208464 Column 5 of A208466
%H A208464 R. H. Hardin, <a href="/A208464/b208464.txt">Table of n, a(n) for n = 1..23</a>
%e A208464 Some solutions for n=4
%e A208464 ..0..0..0..0..0....0..0..0..0..0....0..0..1..0..0....0..0..0..0..0
%e A208464 ..0..1..0..1..0....0..1..0..1..0....0..0..0..1..0....1..2..0..1..2
%e A208464 ..0..0..0..0..0....0..0..0..0..1....0..1..0..2..2....1..0..0..2..0
%e A208464 ..0..1..0..1..0....0..1..0..0..0....3..4..0..0..0....0..1..3..0..0
%K A208464 nonn
%O A208464 1,1
%A A208464 _R. H. Hardin_ Feb 27 2012