cp's OEIS Frontend

A212948 Number of 6Xn 0..n-1 arrays with no column j greater than or equal to than column j-1 in all rows.

%I A212948 #6 Jul 22 2025 23:01:34
%S A212948 1,3367,320396041,232665778445031,764898125476357657001,
%T A212948 8389667096561737605103329223,250841509251155966625680184691562929,
%U A212948 17704338387777976852462465598115049461004519
%N A212948 Number of 6Xn 0..n-1 arrays with no column j greater than or equal to than column j-1 in all rows.
%C A212948 Row 6 of A212943
%H A212948 R. H. Hardin, <a href="/A212948/b212948.txt">Table of n, a(n) for n = 1..18</a>
%e A212948 Some solutions for n=4
%e A212948 ..1..3..2..2....2..0..0..0....1..3..2..3....3..2..1..3....3..2..0..2
%e A212948 ..1..1..3..2....0..1..0..1....1..0..0..1....0..3..1..0....3..2..3..3
%e A212948 ..0..1..0..3....3..3..3..2....1..1..1..2....2..1..0..3....2..3..0..0
%e A212948 ..3..1..3..2....3..0..3..0....2..3..0..3....3..3..3..3....1..2..3..2
%e A212948 ..2..1..1..2....2..0..2..2....3..0..0..3....2..1..3..1....2..0..2..1
%e A212948 ..2..0..1..3....3..0..0..0....3..3..2..1....3..0..0..1....0..1..2..1
%K A212948 nonn
%O A212948 1,2
%A A212948 _R. H. Hardin_ May 31 2012