%I A033583
%S A033583 0,10,40,90,160,250,360,490,640,810,1000,1210,1440,1690,1960,2250,2560,
%T A033583 2890,3240,3610,4000,4410,4840,5290,5760,6250,6760,7290,7840,8410,9000,
%U A033583 9610,10240,10890,11560,12250,12960,13690,14440,15210,16000,16810
%N A033583 10n^2.
%C A033583 Number of edges of a complete 5-partite graph of order 5n, K_n,n,n,n,
               n. - Roberto E. Martinez II (remartin(AT)fas.harvard.edu), Oct 18 
               2001
%C A033583 10 times the squares. [From Omar E. Pol (info(AT)polprimos.com), Dec 
               13 2008]
%C A033583 a(n) = A158187(n) - 1. [From Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), 
               Mar 13 2009]
%F A033583 a(n) = A000290(n)*10 = A001105(n)*5 = A033429(n)*2. [From Omar E. Pol 
               (info(AT)polprimos.com), Dec 13 2008]
%F A033583 a(n)=20*n+a(n-1)-30 (with a(1)=0) [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), 
               Nov 13 2009]
%e A033583 For n=2, a(2)=20*2+0-30=10; n=3, a(3)=20*3+10-30=40; n=4, a(4)=20*4+40-30=90 
               [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Nov 13 2009]
%t A033583 s=0;lst={s};Do[s+=n++ +10;AppendTo[lst, s], {n, 0, 8!, 20}];lst [From 
               Vladimir Orlovsky (4vladimir(AT)gmail.com), Nov 17 2008]
%Y A033583 Cf. A033581, A000217, A000290, A033428.
%Y A033583 Cf. A001105, A033429. [From Omar E. Pol (info(AT)polprimos.com), Dec 
               13 2008]
%Y A033583 Sequence in context: A108777 A000132 A060317 this_sequence A131037 A071233 
               A063490
%Y A033583 Adjacent sequences: A033580 A033581 A033582 this_sequence A033584 A033585 
               A033586
%K A033583 nonn,new
%O A033583 0,2
%A A033583 N. J. A. Sloane (njas(AT)research.att.com).
%E A033583 More terms from Larry Reeves (larryr(AT)acm.org), Nov 08 2001