OFFSET
1,1
REFERENCES
See A180442.
LINKS
EXAMPLE
The triangle is
(row 1) 24
(row 3) 4, 580, 963
(row 7) 29, 39, 56, 190, 2215
(row 9) 32, 552057
(row 11) 22908
(row 13) 108
(row 15) 111, 326
CROSSREFS
KEYWORD
nonn,hard,tabf
AUTHOR
T. D. Noe, Jan 21 2011
STATUS
approved