%I A014641
%S A014641 1,21,65,133,225,341,481,645,833,1045,1281,1541,1825,2133,2465,2821,3201,
%T A014641 3605,4033,4485,4961,5461,5985,6533,7105,7701,8321,8965,9633,10325,11041,
%U A014641 11781,12545,13333,14145,14981,15841,16725,17633,18565,19521,20501,21505
%N A014641 Odd octagonal numbers: (2n+1)(6n+1).
%Y A014641 Cf. A000567, A014642, A014793, A014794.
%Y A014641 Sequence in context: A041864 A041866 A020211 this_sequence A089115 A020309 
               A048713
%Y A014641 Adjacent sequences: A014638 A014639 A014640 this_sequence A014642 A014643 
               A014644
%K A014641 nonn
%O A014641 0,2
%A A014641 Mohammad K. Azarian (ma3(AT)evansville.edu)
%E A014641 More terms from Patrick De Geest (pdg(AT)worldofnumbers.com). Better 
               description from N. J. A. Sloane (njas(AT)research.att.com).