This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A059679 #13 Oct 02 2017 21:29:49 %S A059679 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 A059679 750,173,0,0,0,62,987,2133,1316,230,0,0,0,12,778,3802,4803,2114,295,0, %U A059679 0,0,1,370,4622,11127,9490,3184,368 %N A059679 Triangle T(n,k) giving number of fixed 3 X k polyominoes with n cells (n >= 3, 1<=k<=n-2). %H A059679 Andrew Howroyd, <a href="/A059679/b059679.txt">Table of n, a(n) for n = 3..1277</a> %H A059679 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 A059679 T(n,k) = 0 for n > 3*k. - _Andrew Howroyd_, Oct 02 2017 %e A059679 Triangle starts: %e A059679 1; %e A059679 0, 8; %e A059679 0, 6, 25; %e A059679 0, 1, 44, 50; %e A059679 0, 0, 32, 154, 83; %e A059679 0, 0, 9, 212, 376, 124; %e A059679 0, 0, 1, 158, 784, 750, 173; %e A059679 0, 0, 0, 62, 987, 2133, 1316, 230; %e A059679 ... %Y A059679 Column sums are A034184. %Y A059679 Cf. A059678, A059680, A059681, A059683. %K A059679 nonn,easy,nice,tabl %O A059679 3,3 %A A059679 _N. J. A. Sloane_, Feb 05 2001 %E A059679 a(8) corrected and terms a(39) and beyond from _Andrew Howroyd_, Oct 02 2017