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A059681 Triangle T(n,k) giving number of fixed 5 X k polyominoes with n cells (n >= 5, 1<=k<=n-4).

%I A059681 #12 Oct 02 2017 21:31:25
%S A059681 1,0,16,0,38,83,0,32,376,230,0,10,784,1526,497,0,1,987,5154,4180,932,
%T A059681 0,0,778,11328,18944,9458,1591,0,0,370,17598,58665,52488,18936,2538,0,
%U A059681 0,101,19912,135325,204466,123652,34726,3845,0,0,15,16440,241550,611859
%N A059681 Triangle T(n,k) giving number of fixed 5 X k polyominoes with n cells (n >= 5, 1<=k<=n-4).
%H A059681 Andrew Howroyd, <a href="/A059681/b059681.txt">Table of n, a(n) for n = 5..1279</a>
%H A059681 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 A059681 T(n,k) = 0 for n > 5*k. - _Andrew Howroyd_, Oct 02 2017
%e A059681 Triangle starts:
%e A059681 1;
%e A059681 0, 16;
%e A059681 0, 38,  83;
%e A059681 0, 32, 376,   230;
%e A059681 0, 10, 784,  1526,   497;
%e A059681 0,  1, 987,  5154,  4180,  932;
%e A059681 0,  0, 778, 11328, 18944, 9458, 1591;
%e A059681 ...
%Y A059681 Column sums are row 5 of A292357.
%Y A059681 Cf. A059678, A059679, A059680.
%K A059681 nonn,easy,nice,tabl
%O A059681 5,3
%A A059681 _N. J. A. Sloane_, Feb 05 2001
%E A059681 a(24) corrected and terms a(26) and beyond from _Andrew Howroyd_, Oct 02 2017