%I A048903
%S A048903 1,121771,12625478965,1309034909945503,135723357520344181225,
%T A048903 14072069153115290487843091,1459020273797576190840203197981,
%U A048903 151274140013808225465578657485241095
%N A048903 Heptagonal hexagonal numbers.
%H A048903 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 A048903 Cf. A048901, A048902.
%Y A048903 Sequence in context: A135495 A067384 A066881 this_sequence A115545 A104973 
               A077301
%Y A048903 Adjacent sequences: A048900 A048901 A048902 this_sequence A048904 A048905 
               A048906
%K A048903 nonn
%O A048903 1,2
%A A048903 Eric Weisstein (eric(AT)weisstein.com)