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 A368863 #10 Jan 10 2024 23:55:10 %S A368863 1,0,0,0,5,0,0,0,1,0,0,0,4,2,0,0,0,3,1,0,0,0,0,1,3,5,0,0,0,0,7,6,3,5, %T A368863 0,0,0,0,1,5,3,4,5,0,0,0,0,8,6,1,6,1,3,0,0,0,0,7,2,1,2,0,7,8,0,0,0,0, %U A368863 2,5,7,9,7,9,1,1,0,0,0,0,2,5,4,4,5,4,3,6,1,0,0 %N A368863 Square array read by antidiagonals; the n-th row is the decimal expansion 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 diffusion-limited aggregation on the square lattice. %C A368863 The n-th row is the decimal expansion of the number on the n-th row of A368660 divided by A335573(n+1). See A368660 for details. %C A368863 Rows A130866(k-1)+1 to A130866(k) correspond to k-celled polyominoes, k >= 2. %H A368863 Pontus von Brömssen, <a href="/A368863/b368863.txt">Table of n, a(n) for n = 1..1596</a> (first 56 antidiagonals). %H A368863 <a href="/index/Pol#polyominoes">Index entries for sequences related to polyominoes</a>. %e A368863 Array begins: %e A368863 1.00000000000000000000... (monomino) %e A368863 0.50000000000000000000... (domino) %e A368863 0.14317187227209462175... (L tromino) %e A368863 0.21365625545581075649... (I tromino) %e A368863 0.05331174468766310877... (L tetromino) %e A368863 0.05462942885357382723... (square tetromino) %e A368863 0.05107523273680265528... (T tetromino) %e A368863 0.03794485956843370668... (S tetromino) %e A368863 0.08139812221208792734... (I tetromino) %e A368863 0.01652391644265825925... (P pentomino) %e A368863 0.01709341200261444870... (V pentomino) %e A368863 0.00933365290110550590... (W pentomino) %e A368863 0.01825698429438352158... (L pentomino) %e A368863 0.01973313069852314774... (Y pentomino) %e A368863 0.01316184592639931744... (N pentomino) %e A368863 0.01069856796007681265... (U pentomino) %e A368863 0.02067501830899727807... (T pentomino) %e A368863 0.01358243200363682514... (F pentomino) %e A368863 0.01232428737930631004... (Z pentomino) %e A368863 0.01279646275569121440... (X pentomino) %e A368863 0.02831865405554939733... (I pentomino) %e A368863 ... %Y A368863 Cf. A000105, A001168, A130866, A246521, A335573, A368660 (free polyominoes), A368864, A368865. %Y A368863 Corresponding sequences for internal diffusion-limited aggregation: A368392, A368393. %K A368863 nonn,tabl,cons %O A368863 1,5 %A A368863 _Pontus von Brömssen_, Jan 08 2024