OFFSET
1,12
COMMENTS
Column 2 is A023022. It appears that each row ends with some tail portion of the sequence (..., 89, 21, 89, 18, 68, 19, 53, 12, 58, 10, 40, 12, 30, 8, 31, 7, 20, 7, 17, 4, 16, 4, 9, 4, 8, 2, 7, 2, 4, 2, 3, 1, 2, 1, 1, 1). - Lars Blomberg Mar 08 2017
LINKS
Alois P. Heinz, Rows n = 1..200, flattened (first 100 rows from Lars Blomberg)
Temba Shonhiwa, Compositions with pairwise relatively prime summands within a restricted setting, Fibonacci Quart. 44 (2006), no. 4, 316-323.
FORMULA
It seems that no general formula or recurrence is known.
EXAMPLE
Triangle begins:
1,
1, 1,
1, 1, 1,
1, 1, 1, 1,
1, 2, 1, 1, 1,
1, 1, 2, 1, 1, 1,
1, 3, 1, 2, 1, 1, 1,
1, 2, 3, 1, 2, 1, 1, 1,
1, 3, 2, 3, 1, 2, 1, 1, 1,
1, 2, 4, 2, 3, 1, 2, 1, 1, 1,
1, 5, 2, 4, 2, 3, 1, 2, 1, 1, 1,
1, 2, 7, 2, 4, 2, 3, 1, 2, 1, 1, 1,
1, 6, 2, 7, 2, 4, 2, 3, 1, 2, 1, 1, 1,
...
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
N. J. A. Sloane, Mar 05 2017
STATUS
approved