Search: id:A090466
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%I A090466
%S A090466 6,9,10,12,15,16,18,21,22,24,25,27,28,30,33,34,35,36,39,40,42,45,46,48,
%T A090466 49,51,52,54,55,57,58,60,63,64,65,66,69,70,72,75,76,78,81,82,84,85,87,
%U A090466 88,90,91,92,93,94,95,96,99,100,102,105,106,108,111,112,114,115,117,118
%N A090466 Regular figurative or polygonal numbers of order greater than 2.
%C A090466 The sorted k-gonal numbers of order greater than 2. If you were to include 
               the either the rank 2 or the 2-gonal numbers, then no number would 
               be excluded. See A090467.
%D A090466 Albert H. Beiler, Recreations In The Theory Of Numbers, The Queen Of 
               Mathematics Entertains, Dover, NY, 1964, pps. 185-199.
%H A090466 Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/
               FigurateNumber.html">Link to a section of The World of Mathematics.</
               a>
%F A090466 The n-th k-gonal number is 1 +k*n(n-1)/2 - (n-1)^2.
%t A090466 Take[ Union[ Flatten[ Table[1 + k*n(n - 1)/2 - (n - 1)^2, {n, 3, 100}, 
               {k, 3, 10}]]], 60]
%Y A090466 Cf. A090467, A000217, A000290, A000326, A000384, A000566, A000567.
%Y A090466 Cf. A001106, A001107, A051682, A051624, A051865 through A051876.
%Y A090466 Sequence in context: A129492 A053869 A085275 this_sequence A090428 A039725 
               A125494
%Y A090466 Adjacent sequences: A090463 A090464 A090465 this_sequence A090467 A090468 
               A090469
%K A090466 easy,nonn
%O A090466 1,1
%A A090466 Robert G. Wilson v (rgwv(AT)rgwv.com), Dec 01 2003
%E A090466 Verified by Don Reble (djr(AT)nk.ca), Mar 12 2006

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