OFFSET
1,3
EXAMPLE
Triangle begins:
1;
1;
1;
2;
1;
4;
2;
1, 3, 4;
1;
2;
3;
2, 4;
2, 9;
1;
1, 6;
2, 3;
2, 7;
3, 5;
2, 6;
1, 6, 7, 10;
1, 3, 4;
2;
4, 5;
1, 2, 5;
1, 2, 3, 8.
CROSSREFS
KEYWORD
nonn,tabf,easy
AUTHOR
Juri-Stepan Gerasimov, Nov 25 2023
STATUS
approved