%I A048901
%S A048901 1,247,79453,25583539,8237820025,2652552464431,854113655726677,
%T A048901 275021944591525483,88556212044815478769,28514825256485992638055,
%U A048901 9181685176376444813974861,2956474111967958744107267107
%N A048901 Indices of hexagonal numbers which are also heptagonal.
%H A048901 Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/
               HeptagonalHexagonalNumber.html">Link to a section of The World of 
               Mathematics.</a>
%Y A048901 Cf. A048902, A048903.
%Y A048901 Sequence in context: A166399 A129133 A001243 this_sequence A065146 A064977 
               A068400
%Y A048901 Adjacent sequences: A048898 A048899 A048900 this_sequence A048902 A048903 
               A048904
%K A048901 nonn
%O A048901 1,2
%A A048901 Eric Weisstein (eric(AT)weisstein.com)