Search: id:A123198
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%I A123198
%S A123198 1,4,81,400,1225,2916,5929,10816,18225,28900,43681,63504,89401,122500,
%T A123198 164025,215296,277729,352836,442225,547600,670761,813604,978121,1166400,
%U A123198 1380625,1623076,1896129,2202256,2544025,2924100,3345241,3810304
%N A123198 a(n)=[(n+1)(2n-1)]^2.
%D A123198 Fredrick T. Wall, Chemical Thermodynamics, W. H, Freeman, San Francisco, 
               1965, page 269
%F A123198 a(n)=Sum((4k-1)(4k^2-2k-1),k=0..n) (n>=0).
%p A123198 a:=n->(n+1)^2*(2*n-1)^2: seq(a(n),n=0..31);
%t A123198 f[m_] = Sum[(4*n - 1)*(4*n^2 - 2*n - 1), {n, 0, m}]; a = Table[f[n], 
               {n, 0, 50}]
%Y A123198 Sequence in context: A053901 A017006 A041189 this_sequence A128911 A068087 
               A090599
%Y A123198 Adjacent sequences: A123195 A123196 A123197 this_sequence A123199 A123200 
               A123201
%K A123198 nonn
%O A123198 1,2
%A A123198 Roger Bagula (rlbagulatftn(AT)yahoo.com), Oct 04 2006
%E A123198 Edited by N. J. A. Sloane (njas(AT)research.att.com), Oct 15 2006

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