%I A046199
%S A046199 1,54,3337,206830,12820113,794640166,49254870169,3053007310302,
%T A046199 189237198368545,11729653291539478,727049266877079081,
%U A046199 45065324893087363534,2793323094104539460017,173140966509588359157510
%N A046199 Indices of pentagonal numbers which are also heptagonal.
%H A046199 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 A046199 Cf. A046198, A048900.
%Y A046199 Sequence in context: A076009 A003755 A042405 this_sequence A007761 A085482 
               A084226
%Y A046199 Adjacent sequences: A046196 A046197 A046198 this_sequence A046200 A046201 
               A046202
%K A046199 nonn
%O A046199 1,2
%A A046199 Eric Weisstein (eric(AT)weisstein.com)