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A186912 Number of (n+2)X8 0..6 arrays with each 3X3 subblock having rows and columns in lexicographically nondecreasing order 1

%I #5 Mar 31 2012 12:36:06

%S 4028133387613,921058887545363,110909004238159456,8880688768983407407,

%T 522748636954347087650,23991605690718487651365,

%U 893383694291331850798966,27790825962428614280888055,738601710673817085331465603

%N Number of (n+2)X8 0..6 arrays with each 3X3 subblock having rows and columns in lexicographically nondecreasing order

%C Column 6 of A186915

%H R. H. Hardin, <a href="/A186912/b186912.txt">Table of n, a(n) for n = 1..19</a>

%e Some solutions for 4X8

%e ..0..0..0..0..0..0..0..0....0..0..0..0..0..0..0..5....0..0..0..0..0..0..0..5

%e ..0..0..0..0..0..0..0..3....0..0..0..0..0..0..2..4....0..0..0..0..0..0..1..3

%e ..0..0..0..0..0..0..2..4....0..0..0..0..0..0..6..2....0..0..0..0..0..0..3..6

%e ..0..0..0..0..0..0..4..4....0..0..0..0..0..0..6..5....0..0..0..0..0..0..4..0

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 28 2011

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Last modified March 29 02:23 EDT 2024. Contains 371264 sequences. (Running on oeis4.)