%I A038579
%S A038579 1,4,10,28,64,140,304,640,1326,2716,5502,11052,22044,43700,86180,169184,
%T A038579 330810,644564,1251954,2424860,4684696,9029756,17368408,33343520,
%U A038579 63899686,122259372,233568998,445600236,849014964,1615709156,3071307852
%N A038579 Number of self-avoiding closed walks from 0 of area n in strip Z X {0,
               1,2}.
%D A038579 J. Labelle, Self-avoiding walks and polyominoes in strips, Bull. ICA, 
               23 (1998), 88-98.
%F A038579 G.f.= 2(1+2x^3+2x^4)/(1-x-x^2-x^3)^2-1 [Labelle] - Emeric Deutsch (deutsch(AT)duke.poly.edu), 
               Apr 29 2004
%Y A038579 Cf. A022445, A038578.
%Y A038579 Sequence in context: A032248 A092504 A034920 this_sequence A133726 A026534 
               A111308
%Y A038579 Adjacent sequences: A038576 A038577 A038578 this_sequence A038580 A038581 
               A038582
%K A038579 nonn,walk,easy
%O A038579 0,2
%A A038579 N. J. A. Sloane (njas(AT)research.att.com).
%E A038579 More terms from Emeric Deutsch (deutsch(AT)duke.poly.edu), Apr 29 2004