%I A055004
%S A055004 0,0,1,5,15,33,64,107,171,252,359,490,656,844,1079,1346,1656,2006,2415,
%T A055004 2859,3373,3927,4550,5233,5993,6793,7690,8653,9697,10809,12028,
%U A055004 13299,14695,16158,17731,19398,21174,23018,25017,27108,29318,31616
%N A055004 Boris Stechkin's function.
%D A055004 R. K. Guy, Unsolved Problems Number Theory, A17.
%p A055004 A055004 := proc(n) local m; add((m-1)*floor(n*(m-1)/m),m=2..n); end;
%Y A055004 Sequence in context: A073361 A155013 A134887 this_sequence A147264 A147150 
               A006003
%Y A055004 Adjacent sequences: A055001 A055002 A055003 this_sequence A055005 A055006 
               A055007
%K A055004 nonn
%O A055004 0,4
%A A055004 N. J. A. Sloane (njas(AT)research.att.com), Jun 11 2000