%I A001623 M3682 N1502
%S A001623 1,4,46,1064,35792,1673792,103443808,8154999232,798030483328
%N A001623 Number of 3 X n normalized Latin rectangles.
%D A001623 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%D A001623 N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 
               (includes this sequence).
%D A001623 S. M. Kerawala, The enumeration of the Latin rectangle of depth three 
               by means of a difference equation, Bull. Calcutta Math. Soc., 33 
               (1941), 119-127.
%H A001623 <a href="Sindx_La.html#Latin">Index entries for sequences related to 
               Latin squares and rectangles</a>
%Y A001623 Cf. A001009.
%Y A001623 Sequence in context: A126739 A099023 A000657 this_sequence A002077 A113096 
               A135078
%Y A001623 Adjacent sequences: A001620 A001621 A001622 this_sequence A001624 A001625 
               A001626
%K A001623 nonn,nice
%O A001623 3,2
%A A001623 N. J. A. Sloane (njas(AT)research.att.com).
%E A001623 Better description 7/95.