OFFSET
0,5
COMMENTS
Diagonal sums : A001353(n+1) alternating with zeros.
FORMULA
EXAMPLE
Triangle begins : 0 ; 1,0 ; 0,2,0 ; 2,0,3,0 ; 0,8,0,4,0 ; 4,0,20,0,5,0 ; ...
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Philippe Deléham, Dec 15 2009
STATUS
approved