OFFSET
0,4
COMMENTS
Row sums = A001045 starting with offset 1: (1, 1, 3, 5, 11, 21, 43, ...).
As an eigentriangle, row sums = rightmost term of next row.
FORMULA
EXAMPLE
First few rows of the triangle =
1;
0, 1;
2, 0, 1;
0, 2, 0, 3;
4, 0, 2, 0, 5;
0, 4, 0, 6, 0, 11;
8, 0, 4, 0, 10, 0, 21;
0, 8, 0, 12, 0, 22, 0, 43;
16, 0, 8, 0, 20, 0, 42, 0, 85;
0, 16, 0, 24, 0, 44, 0, 86, 0, 171;
32, 0, 16, 0, 40, 0, 84, 0, 170, 0, 341;
0, 32, 0, 48, 0, 88, 0, 172, 0, 342, 0, 683;
...
Row 4 = (4, 0, 2, 0, 5) = termwise products of (4, 0, 2, 0, 1) and (1, 1, 1, 3, 5)
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Gary W. Adamson, Feb 12 2009
STATUS
approved