OFFSET
1,3
COMMENTS
Is the first column the all 1's sequence?
EXAMPLE
Triangle begins:
1;
1, 2;
1, 2, 3;
1, 2, 3, 5;
1, 3, 4, 5, 6;
1, 3, 4, 5, 6, 7;
1, 2, 5, 6, 7, 8, 9;
1, 2, 5, 6, 7, 8, 9, 11;
1, 2, 5, 6, 7, 8, 9, 11, 13;
1, 2, 5, 7, 8, 9, 11, 12, 13, 15;
1, 2, 5, 7, 8, 9, 11, 12, 13, 15, 17;
1, 2, 5, 7, 8, 9, 11, 12, 13, 15, 17, 19;
1, 5, 6, 7, 9, 11, 13, 14, 15, 16, 17, 19, 20;
1, 2, 5, 7, 11, 12, 13, 16, 17, 18, 19, 20, 21, 23;
...
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Peter Kagey, Sep 03 2021
STATUS
approved