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A201276 Number of n X 7 0..2 arrays with every row and column nondecreasing rightwards and downwards, and the number of instances of each value within one of each other. 2

%I #10 Mar 18 2024 16:52:09

%S 1,3,27,54,740,2827,3113,27008,71704,59070,408600,894812,621910,

%T 3704174,7087046,4373879,23558696,41171126,23396689,116650532,

%U 190010902,101247815,476808796,736407602,373431803,1678517670,2482516953,1208979602,5235742304,7477415626

%N Number of n X 7 0..2 arrays with every row and column nondecreasing rightwards and downwards, and the number of instances of each value within one of each other.

%H Alois P. Heinz, <a href="/A201276/b201276.txt">Table of n, a(n) for n = 0..175</a> (terms n = 1..82 from R. H. Hardin)

%e Some solutions for n=5

%e ..0..0..0..0..0..1..2....0..0..0..0..0..0..2....0..0..0..0..0..0..1

%e ..0..0..0..1..1..1..2....0..0..1..1..1..1..2....0..0..0..1..1..1..2

%e ..0..0..0..1..1..1..2....0..1..1..1..2..2..2....0..0..0..1..1..2..2

%e ..1..1..1..1..2..2..2....0..1..1..1..2..2..2....1..1..1..1..1..2..2

%e ..1..2..2..2..2..2..2....0..1..1..2..2..2..2....1..2..2..2..2..2..2

%Y Column 7 of A201277.

%K nonn,changed

%O 0,2

%A _R. H. Hardin_, Nov 29 2011

%E a(0)=1 prepended by _Alois P. Heinz_, Mar 18 2024

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Last modified March 28 14:38 EDT 2024. Contains 371254 sequences. (Running on oeis4.)