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A100146 Structured great rhombicubeoctahedral numbers. 3

%I #12 Sep 08 2022 08:45:15

%S 1,48,221,600,1265,2296,3773,5776,8385,11680,15741,20648,26481,33320,

%T 41245,50336,60673,72336,85405,99960,116081,133848,153341,174640,

%U 197825,222976,250173,279496,311025,344840,381021,419648

%N Structured great rhombicubeoctahedral numbers.

%H Vincenzo Librandi, <a href="/A100146/b100146.txt">Table of n, a(n) for n = 1..5000</a>

%F a(n) = (1/6)*(80*n^3 - 102*n^2 + 28*n).

%F a(n) = ((n-1)+1)*(5*(n-1)+3)*(8*(n-1)+1)/3; g.f.: x*(1 + 44*x + 35*x^2)/(1-x)^4. - _Jaume Oliver Lafont_, Sep 08 2009

%o (Magma) [((n-1)+1)*(5*(n-1)+3)*(8*(n-1)+1)/3: n in [1..40]]; // _Vincenzo Librandi_, Jul 19 2011

%Y Cf. A100145, A100147 for adjacent structured Archimedean solids; and A100145 for more on structured polyhedral numbers.

%K easy,nonn

%O 1,2

%A James A. Record (james.record(AT)gmail.com), Nov 07 2004

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Last modified April 16 04:02 EDT 2024. Contains 371696 sequences. (Running on oeis4.)