OFFSET
1,2
COMMENTS
Row sums = A048487.
When the first column is removed from this triangle, the result is A125233. - Georg Fischer, Jul 26 2023
FORMULA
Binomial transform of an infinite lower triangular matrix with all 1's in the main diagonal and all 4's in the subdiagonal (by columns, (1, 4, 0, 0, 0, ...) in every column.
EXAMPLE
First few rows of the triangle:
1;
5, 1;
9, 6, 1;
13, 15, 7, 1;
17, 28, 22, 8, 1;
21, 45, 50, 30, 9, 1;
25, 66, 95, 80, 39, 10, 1;
...
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Gary W. Adamson, Dec 01 2007
STATUS
approved