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A024933 a(n) = Sum_{k=1..n} k*[ (n/k)*[ (n/k)*[ n/k ] ] ]. 0

%I

%S 1,10,32,87,161,309,462,737,1043,1477,1890,2610,3221,4079,5049,6235,

%T 7329,8958,10306,12317,14213,16370,18400,21586,24118,27216,30414,

%U 34325,37580,42520,46226,51315,56165,61495,66809,74030,79519,86179,92862,101454

%N a(n) = Sum_{k=1..n} k*[ (n/k)*[ (n/k)*[ n/k ] ] ].

%K nonn

%O 1,2

%A _Clark Kimberling_

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Last modified October 22 18:31 EDT 2019. Contains 328319 sequences. (Running on oeis4.)