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 A230632 #14 Oct 31 2013 11:01:43 %S A230632 1,0,1,0,1,1,1,1,0,1,1,1,1,0,1,1,1,2,0,2,0,2,1,1,1,0,1,1,1,1,0,1,1,1, %T A230632 2,0,2,0,2,1,1,1,0,1,1,1,1,0,1,1,1,2,0,2,0,2,1,1,1,0,1,1,1,1,0,2,1,2, %U A230632 1,1,2,1,2,0,1,1,1,1,0,1,1,1,2,0,2,0,2,1,1,1,0,1,1,1,1,0,1,1,1,2,0,2,0 %N A230632 Number of integers m such that m + (sum of digits in base-4 representation of m) = n. %C A230632 Number of occurrences of n in A230631. %H A230632 Donovan Johnson, <a href="/A230632/b230632.txt">Table of n, a(n) for n = 0..10000</a> %H A230632 <a href="/index/Coi#Colombian">Index entries for Colombian or self numbers and related sequences</a> %Y A230632 Cf. A230631, A010064 (positions of 0's), A230633-A230635. %Y A230632 Related base-4 sequences: A053737, A230631, A230632, A010064, A230633, A230634,A230635, A230636, A230637, A230638, A010065 (trajectory of 1) %K A230632 nonn,base %O A230632 0,18 %A A230632 _N. J. A. Sloane_, Oct 30 2013