cp's OEIS Frontend

A367676 a(n) is the denominator of the probability that a particular one of the A335573(n+1) fixed polyominoes corresponding to the free polyomino with binary code A246521(n+1) appears in the version of the Eden growth model described in A367671 when n square cells have been added.

%I A367676 #12 Dec 03 2023 11:34:30
%S A367676 1,2,6,6,112,21,336,21,24,8064,504,84,2520,40320,1008,504,8064,8064,
%T A367676 504,672,120,399168,39916800,1155,30240,18144,528,241920,26880,36288,
%U A367676 4435200,1814400,480,181440,480,2217600,3991680,528,20736,36288,362880,378,110880,4435200,36960,201600,5040,13860,295680,5702400,4435200,13860,103680,50400,1814400,720
%N A367676 a(n) is the denominator of the probability that a particular one of the A335573(n+1) fixed polyominoes corresponding to the free polyomino with binary code A246521(n+1) appears in the version of the Eden growth model described in A367671 when n square cells have been added.
%C A367676 Can be read as an irregular triangle, whose n-th row contains A000105(n) terms, n >= 1.
%C A367676 Terms on the n-th row are (2*n-1)-smooth.
%H A367676 <a href="/index/Pol#polyominoes">Index entries for sequences related to polyominoes</a>.
%F A367676 A367675(n)/a(n) = (A367671(n)/A367672(n))/A335573(n+1).
%e A367676 As an irregular triangle:
%e A367676      1;
%e A367676      2;
%e A367676      6,   6;
%e A367676    112,  21, 336,   21,    24;
%e A367676   8064, 504,  84, 2520, 40320, 1008, 504, 8064, 8064, 504, 672, 120;
%e A367676   ...
%Y A367676 Cf. A000105, A246521, A335573, A367671, A367672, A367675 (numerators), A367678, A367765.
%K A367676 nonn,frac,tabf
%O A367676 1,2
%A A367676 _Pontus von Brömssen_, Nov 26 2023