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A172720 Number of 9*n X 2*n 0..2 arrays with row sums 2 and column sums 9 1

%I

%S 3139,3423871305383100,34335031273255183438800013252500,

%T 141178303808277520681079289672968415090175698600000,

%U 52186319789297652611103763179819584756687013016766057690192910549000000

%N Number of 9*n X 2*n 0..2 arrays with row sums 2 and column sums 9

%H R. H. Hardin, <a href="/A172720/b172720.txt">Table of n, a(n) for n=1..11</a>

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 06 2010

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Last modified January 19 06:18 EST 2022. Contains 350464 sequences. (Running on oeis4.)