OFFSET
1,3
COMMENTS
EXAMPLE
Written as a triangle:
. 0;
. 1;
. 2;
. 3;
. 4;
. 5, 0;
. 6, 1;
. 7, 2;
. 8, 3, 0;
. 9, 4, 1;
. 10, 5, 2;
. 11, 6, 3;
. 12, 7, 4;
. 13, 8, 5;
. 14, 9, 6;
. 15, 10, 7;
. 16, 11, 8;
. 17, 12, 9;
. 18, 13, 10, 0;
. 19, 14, 11, 1;
. 20, 15, 12, 2;
CROSSREFS
KEYWORD
nonn,tabf
AUTHOR
Omar E. Pol, Sep 24 2011
STATUS
approved