%I #3 Mar 31 2012 13:50:43
%S 0,1,1,1,5,1,6,2,1,13,5,1,18,7,2,1,36,11,3,1,48,20,5,2,79,28,9,3,109,
%T 42,13,5,1,170,64,19,7,1,230,90,28,11,2,1,337,127,40,17,3,1,453,181,
%U 58,24,5,2,648,247,80,34,7,3,859,338,111,48,11,5,1,1185,465,151,66,15,7,1
%N Triangle of prime signature of A007870(n), read by rows.
%C Lengths of rows are 1 2 2 3 3 4 4 4 4 5 5 6 6 .... (A000720).
%e 0.1.1.5.6.13.18.36.48.79...etc
%e ....1.1.2..5..7.11.20.28...etc
%e ........1..1..2..3..5..9...etc
%e ..............1..1..2..3...etc
%K easy,nonn,tabf
%O 1,5
%A _Naohiro Nomoto_, Jan 25 2002
%E Extended by _David Wasserman_, Dec 04 2002