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 A175357 #10 Feb 06 2019 16:35:55
%S A175357 1,1,2,2,2,2,1,2,1,2,1,3,2,3,2,3,1,3,2,3,3,2,1,3,2,2,3,3,1,3,3,3,2,2,
%T A175357 1,3,3,2,2,3,1,3,3,2,3,2,1,2,2,3,3,3,1,2,3,3,2,3,1,2,3,3,3,2,1,2,3,2,
%U A175357 3,3,2,3,1,3,2,3,2,3,1,3,3,2,2,3,1,2,3
%N A175357 Irregular array: Row n contains the run-lengths (of runs of both 0's and 1's) of the binary representation of A175356(n).
%C A175357 This array orders the distinct permutations each of one 1, two 2's, three 3's..., m number of m's, for a positive integer m.
%C A175357 The number of terms per row is nondecreasing. There are exactly (m(m+1)/2)!/product{k=1 to m}k! rows in the sequence each of m(m+1)/2 terms, for all m >= 1, and none of any other number of terms.
%H A175357 Rémy Sigrist, <a href="/A175357/a175357.gp.txt">PARI program for A175357</a>
%e A175357 8984, the fifth term of A175356, is 10001100011000 in binary. There is a run of one 1, followed by a run of three 0's, followed by a run of two 1's, followed by a run of three 0's, followed by a run of two 1's, followed finally by a run of three 0's. So, row 5 is 1,3,2,3,2,3.
%o A175357 (PARI) See Links section.
%Y A175357 Cf. A175356, A022915.
%K A175357 base,nonn,tabf
%O A175357 1,3
%A A175357 _Leroy Quet_, Apr 22 2010
%E A175357 Example changed and tabf keyword added by _Leroy Quet_, Apr 27 2010
%E A175357 More terms from _Rémy Sigrist_, Feb 06 2019