OFFSET
0,4
FORMULA
T(n,0) = T(n-1,0) + T(n-1,1).
T(n,1) = T(n-1,0) + 3*T(n-1,1) + T(n-1,2).
T(n,k) = 2*T(n-1,k-1) + 3*T(n-1,k) + T(n-1,k+1) for k>1.
EXAMPLE
Triangle begins:
1 ;
1,1 ;
2,4,2 ;
6,16,14,4 ;
22,68,78,40,8 ;
90,304,410,284,104,16 ;
...
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Philippe Deléham, Nov 08 2009
STATUS
approved