A166348 - OEIS

%I #6 Oct 12 2012 20:56:53

%S 1,2,0,2,1,1,4,1,1,0,4,2,1,0,1,6,3,1,1,0,0,7,3,2,1,1,0,0,10,3,1,2,0,1,

%T 1,0,10,4,2,1,2,0,1,0,1,13,5,2,1,1,1,1,0,1,0,14,5,4,2,0,1,1,1,0,0,1,

%U 16,7,3,2,2,0,1,1,1,0,0,0,19,7,3,3,1,2,0,1,0,1,1,0,0

%N Irregular triangle read by rows giving the frequency with which each nonzero value v of floor (j^2/p) occurs within A165974 for each j, taken over all primes p.

%H C. H. Gribble, <a href="/A166348/b166348.txt">Flattened triangle read by rows as table of n, a(n) for n = 1:495510 (j = 1:995)</a>.

%e Part of the irregular triangle from which the sequence is constructed is shown below.

%e ....v...1..2..3..4..5..6..7..8..9.10.11.12.13

%e ..j

%e ..1.....

%e ..2.....1

%e ..3.....2..0

%e ..4.....2..1..1

%e ..5.....4..1..1..0

%e ..6.....4..2..1..0..1

%e ..7.....6..3..1..1..0..0

%e ..8.....7..3..2..1..1..0..0

%e ..9....10..3..1..2..0..1..1..0

%e .10....10..4..2..1..2..0..1..0..1

%e .11....13..5..2..1..1..1..1..0..1..0

%e .12....14..5..4..2..0..1..1..1..0..0..1

%e .13....16..7..3..2..2..0..1..1..1..0..0..0

%e .14....19..7..3..3..1..2..0..1..0..1..1..0..0

%Y Cf. A165974

%K nonn,tabf

%O 1,2

%A _Christopher Hunt Gribble_, Oct 12 2009

%E Minor corrections by _Christopher Hunt Gribble_, Dec 13 2009