%I A013582
%S A013582 1,4,25,124,574,2156,8258
%N A013582 Number of positions in game "Connect Four" (played on usual 6 row, 7 
               column board) after n moves.
%Y A013582 Sequence in context: A110051 A013187 A069639 this_sequence A123660 A156701 
               A015533
%Y A013582 Adjacent sequences: A013579 A013580 A013581 this_sequence A013583 A013584 
               A013585
%K A013582 nonn,fini
%O A013582 0,2
%A A013582 Russ Cox (rsc(AT)swtch.com)