OFFSET
0,2
EXAMPLE
Triangle starts:
[1]
[3, 1]
[15, 5, 1]
[35, 35, 7, 1]
[315, 105, 63, 9, 1]
[693, 1155, 231, 99, 11, 1]
[3003, 3003, 3003, 429, 143, 13, 1]
[6435, 15015, 9009, 6435, 715, 195, 15, 1]
PROG
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Peter Luschny, Apr 07 2016
STATUS
approved