A166348 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.

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, 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, 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

Offset: 1

Author

Christopher Hunt Gribble, Oct 12 2009

Keywords

• nonn
• tabf

Examples

			Part of the irregular triangle from which the sequence is constructed is shown below.
....v...1..2..3..4..5..6..7..8..9.10.11.12.13
..j
..1.....
..2.....1
..3.....2..0
..4.....2..1..1
..5.....4..1..1..0
..6.....4..2..1..0..1
..7.....6..3..1..1..0..0
..8.....7..3..2..1..1..0..0
..9....10..3..1..2..0..1..1..0
.10....10..4..2..1..2..0..1..0..1
.11....13..5..2..1..1..1..1..0..1..0
.12....14..5..4..2..0..1..1..1..0..0..1
.13....16..7..3..2..2..0..1..1..1..0..0..0
.14....19..7..3..3..1..2..0..1..0..1..1..0..0
		

Links

• C. H. Gribble, Flattened triangle read by rows as table of n, a(n) for n = 1:495510 (j = 1:995).

Crossrefs

Cf. A165974

Extensions

Minor corrections by Christopher Hunt Gribble, Dec 13 2009