OFFSET
0,5
EXAMPLE
The triangle begins as:
1;
1, 1;
1, 2, 2;
1, 3, 5, 5;
1, 4, 9, 16, 15;
...
For example, O_4 = I_4 + 4*I_3 + 9*I_2 + 16*I_1 + 15*I_0.
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
N. J. A. Sloane, Feb 08 2001
STATUS
approved
