%I A046187
%S A046187 1,11,1025,12507,1182657,14432875,1364784961,16655525051,
%T A046187 1574960662145,19220461475787,1817503239330177,22180395887532955,
%U A046187 2097397163226361921,25596157633751554091,2420394508859982326465
%N A046187 Indices of pentagonal numbers which are also octagonal.
%H A046187 Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/
               OctagonalPentagonalNumber.html">Link to a section of The World of 
               Mathematics.</a>
%Y A046187 Cf. A046188, A046189.
%Y A046187 Sequence in context: A065050 A099440 A069710 this_sequence A004811 A126197 
               A090814
%Y A046187 Adjacent sequences: A046184 A046185 A046186 this_sequence A046188 A046189 
               A046190
%K A046187 nonn
%O A046187 1,2
%A A046187 Eric Weisstein (eric(AT)weisstein.com)