%I A001416 M4271 N1785
%S A001416 1,6,60,1368,15552,201240,2016432,21582624
%N A001416 Number of ways of folding a 3 X n strip of stamps.
%D A001416 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%D A001416 N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 
               (includes this sequence).
%D A001416 Lunnon, W. F.; Multi-dimensional map-folding. Comput. J. 14 1971 75-80.
%H A001416 <a href="Sindx_Fo.html#fold">Index entries for sequences obtained by 
               enumerating foldings</a>
%Y A001416 Sequence in context: A126574 A061573 A092356 this_sequence A003267 A010574 
               A082681
%Y A001416 Adjacent sequences: A001413 A001414 A001415 this_sequence A001417 A001418 
               A001419
%K A001416 nonn
%O A001416 0,2
%A A001416 N. J. A. Sloane (njas(AT)research.att.com).