%I A048924
%S A048924 1,631125,286703855361,130242107189808901,59165603001256545014625,
%T A048924 26877395137662573622784125461,12209701798707362366915379264832801,
%U A048924 5546550074879110936730454426529871893125
%N A048924 9-gonal octagonal numbers.
%H A048924 Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/
               NonagonalOctagonalNumber.html">Link to a section of The World of 
               Mathematics.</a>
%Y A048924 Cf. A048922, A048923.
%Y A048924 Sequence in context: A161533 A053877 A141815 this_sequence A066590 A113951 
               A089220
%Y A048924 Adjacent sequences: A048921 A048922 A048923 this_sequence A048925 A048926 
               A048927
%K A048924 nonn
%O A048924 1,2
%A A048924 Eric Weisstein (eric(AT)weisstein.com)