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 A166347 #8 Mar 30 2012 17:34:11 %S A166347 1,0,1,1,0,2,1,0,1,0,2,1,1,1,0,1,0,3,1,1,1,1,1,0,1,0,1,0,3,2,1,1,1,0, %T A166347 1,1,0,1,0,1,0,4,1,2,1,1,1,0,1,1,1,0,1,0,1,0,1,0,4,2,1,1,1,1,1,1,1,0, %U A166347 1,1,0,1,0,1,0,1,0,4,2,2,1,1,1,1,1,1,1,0,1,1,0,1,1,0,1,0,1,0,1,0 %N A166347 Irregular triangle read by rows of the frequency with which each value v of floor (j^2/p) occurs within A165974 for each prime p, taken over 1 <= j <= p - 1. %C A166347 Part of the irregular triangle from which the sequence is constructed %C A166347 is shown below. %C A166347 ....v..0..1..2..3..4..5..6..7..8..9.10.11.12.13.14.15.16.17.18.19.20.21.22 %C A166347 ..p %C A166347 ..2....1..0 %C A166347 ..3....1..1..0 %C A166347 ..5....2..1..0..1..0 %C A166347 ..7....2..1..1..1..0..1..0 %C A166347 .11....3..1..1..1..1..1..0..1..0..1..0 %C A166347 .13....3..2..1..1..1..0..1..1..0..1..0..1..0 %C A166347 .17....4..1..2..1..1..1..0..1..1..1..0..1..0..1..0..1..0 %C A166347 .19....4..2..1..1..1..1..1..1..1..0..1..1..0..1..0..1..0..1..0 %C A166347 .23....4..2..2..1..1..1..1..1..1..1..0..1..1..0..1..1..0..1..0..1..0..1..0 %H A166347 C. H. Gribble, <a href="/A166347/b166347.txt">Flattened irregular triangle read by rows of primes < 300</a> %Y A166347 Cf. A165974 %K A166347 nonn,tabf %O A166347 1,6 %A A166347 _Christopher Hunt Gribble_, Oct 12 2009 %E A166347 Minor edits by _Christopher Hunt Gribble_, Oct 13 2009