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Number of increasing sequences of n integers x(1),...,x(n) with values in 1..3*n such that x(j) divides x(k) if j divides k
1

%I #4 Mar 31 2012 12:35:46

%S 3,8,32,66,310,228,1286,1857,1679,1047,5462,5816,20548,10255,6969,

%T 6184,22842,20854,73561,110264,64726,24682,109028,152655,160537,60818,

%U 63827,62192,210722,302655,986366,1527247,1034364,351261,435716,408394,1313828

%N Number of increasing sequences of n integers x(1),...,x(n) with values in 1..3*n such that x(j) divides x(k) if j divides k

%C Column 3 of A180383

%H R. H. Hardin, <a href="/A180385/b180385.txt">Table of n, a(n) for n=1..57</a>

%K nonn

%O 1,1

%A _R. H. Hardin_ Sep 01 2010