OFFSET
1,1
EXAMPLE
The triangle (row lengths are 2^(n-1)) starts:
1: 2
2: 2, 3
3: 3, 7, 5, 7
4: 2, 17, 7, 11, 5, 11, 13, 5
5: 3, 241, 17, 29, 7, 17, 31, 43, 13, 43, 11, 17, 13, 29, 193, 11
PROG
CROSSREFS
KEYWORD
nonn,tabf
AUTHOR
Peter Luschny, Nov 23 2017
STATUS
approved