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A180380 Number of increasing sequences of n integers x(1),...,x(n) with values in 1..3*n such that x(j) divides x(k) iff j divides k 1

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

%S 3,8,25,45,136,57,190,260,233,70,222,130,366,116,145,108,354,226,842,

%T 808,763,182,876,817,790,191,192,191,1025,817,3784,3703,3533,790,790,

%U 790,3880,817,817,817,4303,3695,16608,17329,17086,3695,17177,17653,17653

%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) iff j divides k

%C Column 3 of A180378

%H R. H. Hardin, <a href="/A180380/b180380.txt">Table of n, a(n) for n=1..99</a>

%K nonn

%O 1,1

%A _R. H. Hardin_ Sep 01 2010

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Last modified April 19 09:23 EDT 2024. Contains 371782 sequences. (Running on oeis4.)