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A180781 Number of distinct solutions of sum{i=1..10}(x(2i-1)*x(2i)) = 0 (mod n), with x() only in 1..n-1 1

%I

%S 0,1,18,756,18478,327338,4292145,43576141,354466005,2394458182,

%T 13770292261,69111228938,307750080438,1236998118274,4537247867399,

%U 15375840213938,48489022864504,143625325278096,401488209736317

%N Number of distinct solutions of sum{i=1..10}(x(2i-1)*x(2i)) = 0 (mod n), with x() only in 1..n-1

%C Column 10 of A180782

%H R. H. Hardin, <a href="/A180781/b180781.txt">Table of n, a(n) for n=1..183</a>

%K nonn

%O 1,3

%A _R. H. Hardin_ Sep 20 2010

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Last modified August 19 15:40 EDT 2022. Contains 356229 sequences. (Running on oeis4.)