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A212949 Number of 7Xn 0..n-1 arrays with no column j greater than or equal to than column j-1 in all rows.

%I A212949 #6 Jul 22 2025 23:01:42
%S A212949 1,14197,9245913139,64146409058631061,2592491557886605293297751,
%T A212949 427593510370812774462812710051387,
%U A212949 227328735342370296661661894900118524516359
%N A212949 Number of 7Xn 0..n-1 arrays with no column j greater than or equal to than column j-1 in all rows.
%C A212949 Row 7 of A212943
%H A212949 R. H. Hardin, <a href="/A212949/b212949.txt">Table of n, a(n) for n = 1..17</a>
%e A212949 Some solutions for n=4
%e A212949 ..0..0..0..0....0..1..2..1....3..3..2..0....1..2..3..2....3..1..1..2
%e A212949 ..1..0..1..3....1..1..0..2....0..2..1..1....3..1..1..1....0..1..0..0
%e A212949 ..3..3..2..3....1..3..3..1....3..1..0..0....3..3..3..1....0..0..3..0
%e A212949 ..0..3..0..2....2..0..2..2....1..0..2..3....3..1..3..3....1..1..2..0
%e A212949 ..0..2..2..3....1..2..0..0....2..1..1..0....3..1..1..1....2..2..1..0
%e A212949 ..0..0..0..3....1..0..2..2....3..3..0..1....3..2..3..0....3..2..2..0
%e A212949 ..2..0..2..0....0..1..3..2....0..0..3..2....1..1..0..2....2..3..3..0
%K A212949 nonn
%O A212949 1,2
%A A212949 _R. H. Hardin_ May 31 2012