%I A048904
%S A048904 1,345,166145,80081401,38599068993,18604671173081,8967412906355905,
%T A048904 4322274416192372985,2083327301191817422721,1004159436900039805378393,
%U A048904 484002765258517994374962561,233288328695168773248926575865
%N A048904 Indices of heptagonal numbers (A000566) which are also octagonal.
%H A048904 Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/
               OctagonalHeptagonalNumber.html">Link to a section of The World of 
               Mathematics.</a>
%Y A048904 Cf. A048905, A048906.
%Y A048904 Sequence in context: A063370 A095963 A138043 this_sequence A139266 A063536 
               A045102
%Y A048904 Adjacent sequences: A048901 A048902 A048903 this_sequence A048905 A048906 
               A048907
%K A048904 nonn
%O A048904 1,2
%A A048904 Eric Weisstein (eric(AT)weisstein.com)