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%I #13 Oct 02 2017 21:29:49
%S 1,0,8,0,6,25,0,1,44,50,0,0,32,154,83,0,0,9,212,376,124,0,0,1,158,784,
%T 750,173,0,0,0,62,987,2133,1316,230,0,0,0,12,778,3802,4803,2114,295,0,
%U 0,0,1,370,4622,11127,9490,3184,368
%N Triangle T(n,k) giving number of fixed 3 X k polyominoes with n cells (n >= 3, 1<=k<=n-2).
%H Andrew Howroyd, <a href="/A059679/b059679.txt">Table of n, a(n) for n = 3..1277</a>
%H R. C. Read, <a href="http://cms.math.ca/cjm/v14/cjm1962v14.0001-0020.pdf">Contributions to the cell growth problem</a>, Canad. J. Math., 14 (1962), 1-20.
%F T(n,k) = 0 for n > 3*k. - _Andrew Howroyd_, Oct 02 2017
%e Triangle starts:
%e 1;
%e 0, 8;
%e 0, 6, 25;
%e 0, 1, 44, 50;
%e 0, 0, 32, 154, 83;
%e 0, 0, 9, 212, 376, 124;
%e 0, 0, 1, 158, 784, 750, 173;
%e 0, 0, 0, 62, 987, 2133, 1316, 230;
%e ...
%Y Column sums are A034184.
%Y Cf. A059678, A059680, A059681, A059683.
%K nonn,easy,nice,tabl
%O 3,3
%A _N. J. A. Sloane_, Feb 05 2001
%E a(8) corrected and terms a(39) and beyond from _Andrew Howroyd_, Oct 02 2017
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