OFFSET
1,6
COMMENTS
The irregular triangle of numbers is:
..n....Squarefree nonzero quadratic residues
..1....
..2....1
..3....1
..4....1
..5....1
..6....1..3
..7....1..2
..8....1
..9....1..7
.10....1..5..6
.11....1..3..5
.12....1
.13....1..3.10
.14....1..2..7.11
.15....1..6.10
.16....1
.17....1..2.13.15
.18....1..7.10.13
.19....1..5..6..7.11.17
.20....1..5
.21....1..7.15
.22....1..3..5.11.14.15
.23....1..2..3..6.13
.24....1
.25....1..6.11.14.19.21
.26....1..3.10.13.14.17.22.23
.27....1..7.10.13.19.22
.28....1.21
.29....1..5..6..7.13.22.23
LINKS
CROSSREFS
KEYWORD
nonn,tabf
AUTHOR
Christopher Hunt Gribble, Sep 30 2009
EXTENSIONS
Minor edit by Christopher Hunt Gribble, Oct 05 2009
STATUS
approved