Search: id:A048917
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%I A048917
%S A048917 1,13,51625,822757,3330519121,53079328957,214865110504441,
%T A048917 3424359827493013,13861807735752971425,220919149857804895597,
%U A048917 894280664049502087991881,14252378030502065207035717
%N A048917 Indices of hexagonal numbers which are also 9-gonal.
%H A048917 Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/
               NonagonalHexagonalNumber.html">Link to a section of The World of 
               Mathematics.</a>
%Y A048917 Cf. A048916, A048918.
%Y A048917 Sequence in context: A124990 A013752 A076811 this_sequence A081317 A027680 
               A022547
%Y A048917 Adjacent sequences: A048914 A048915 A048916 this_sequence A048918 A048919 
               A048920
%K A048917 nonn
%O A048917 1,2
%A A048917 Eric Weisstein (eric(AT)weisstein.com)

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