%I A063521
%S A063521 0,1,16,59,144,285,496,791,1184,1689,2320,3091,4016,5109,6384,7855,
%T A063521 9536,11441,13584,15979,18640,21581,24816,28359,32224,36425,40976,
%U A063521 45891,51184,56869,62960,69471,76416,83809,91664,99995,108816,118141
%N A063521 n*(7*n^2-4)/3.
%C A063521 Also as a(n)=(1/6)*(14*n^3-8*n), n>0: structured heptagonal anti-diamond 
               numbers (vertex structure 15) (Cf. A100186 = alternate vertex; A100188 
               = structured anti-diamonds; A100145 for more on structured numbers). 
               - James A. Record (james.record(AT)gmail.com), Nov. 7, 2004.
%D A063521 T. P. Martin, Shells of atoms, Phys. Reports, 273 (1996), 199-241, eq. 
               (11).
%H A063521 Harry J. Smith, <a href="b063521.txt">Table of n, a(n) for n=0,...,1000</
               a>
%t A063521 lst={};Do[AppendTo[lst, n*(7*n^2-4)/3], {n, 1, 6!}];lst [From Vladimir 
               Orlovsky (4vladimir(AT)gmail.com), Sep 02 2008]
%o A063521 (PARI) { for (n=0, 1000, write("b063521.txt", n, " ", n*(7*n^2 - 4)/3) 
               ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Aug 25 2009]
%Y A063521 1/12*t*(n^3-n)+n for t = 2, 4, 6, ... gives A004006, A006527, A006003, 
               A005900, A004068, A000578, A004126, A000447, A004188, A004466, A004467, 
               A007588, A062025, A063521, A063522, A063523.
%Y A063521 Sequence in context: A029719 A039451 A005905 this_sequence A027117 A039406 
               A031190
%Y A063521 Adjacent sequences: A063518 A063519 A063520 this_sequence A063522 A063523 
               A063524
%K A063521 nonn
%O A063521 0,3
%A A063521 N. J. A. Sloane (njas(AT)research.att.com), Aug 02 2001