%I A046198
%S A046198 1,42,2585,160210,9930417,615525626,38152658377,2364849293730,
%T A046198 146582503552865,9085750370983882,563169940497447801,
%U A046198 34907450560470779762,2163698764808690897425,134114415967578364860570
%N A046198 Indices of heptagonal numbers (A000566) which are also pentagonal.
%H A046198 Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/
               HeptagonalPentagonalNumber.html">Link to a section of The World of 
               Mathematics.</a>
%Y A046198 Cf. A046199, A048900.
%Y A046198 Sequence in context: A158727 A009986 A041841 this_sequence A053875 A048538 
               A102967
%Y A046198 Adjacent sequences: A046195 A046196 A046197 this_sequence A046199 A046200 
               A046201
%K A046198 nonn
%O A046198 1,2
%A A046198 Eric Weisstein (eric(AT)weisstein.com)