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A367761 a(n) is the denominator of the probability that the free polyomino with binary code A246521(n+1) appears in the Eden growth model on the square lattice, when n square cells have been added.

%I A367761 #5 Dec 03 2023 09:11:37
%S A367761 1,1,3,3,3,6,4,6,12,5,30,30,15,60,15,30,120,60,30,40,60,450,600,90,90,
%T A367761 600,90,900,48,600,48,1800,90,450,90,40,48,90,1800,80,48,180,90,48,90,
%U A367761 80,180,180,96,40,48,180,40,480,360,360,151200,756000,756000,10080,10080,151200,151200,630,10080
%N A367761 a(n) is the denominator of the probability that the free polyomino with binary code A246521(n+1) appears in the Eden growth model on the square lattice, when n square cells have been added.
%C A367761 Can be read as an irregular triangle, whose n-th row contains A000105(n) terms, n >= 1.
%H A367761 <a href="/index/Pol#polyominoes">Index entries for sequences related to polyominoes</a>.
%F A367761 A367760(n)/a(n) = (A367764(n)/A367765(n))*A335573(n+1).
%e A367761 As an irregular triangle:
%e A367761   1;
%e A367761   1;
%e A367761   3,  3;
%e A367761   3,  6,  4,  6, 12;
%e A367761   5, 30, 30, 15, 60, 15, 30, 120, 60, 30, 40, 60;
%e A367761   ...
%Y A367761 Cf. A000105, A246521, A335573, A367672, A367760 (numerators), A367763, A367764, A367765.
%K A367761 nonn,frac,tabf
%O A367761 1,3
%A A367761 _Pontus von Brömssen_, Dec 02 2023