OFFSET
1,2
COMMENTS
Row sums give A133095.
Binomial transform of an infinite lower triangular matrix with (1,1,1,...) in the main diagonal, (2,1,2,1,...) in the subdiagonal and (0,1,0,1,...) in the subsubdiagonal.
EXAMPLE
First few rows of the triangle:
1;
3, 1;
5, 3, 1;
7, 7, 5, 1;
9, 14, 14, 5, 1;
11, 25, 30, 16, 7, 1;
13, 41, 55, 41, 27, 7, 1;
...
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Gary W. Adamson, Sep 09 2007
STATUS
approved