A128206 Inverse of number triangle A128207.

1, 1, 1, 0, 1, 1, 0, 0, 2, 1, 0, 0, 0, 3, 1, 0, 0, 0, 0, 5, 1, 0, 0, 0, 0, 0, 8, 1, 0, 0, 0, 0, 0, 0, 13, 1, 0, 0, 0, 0, 0, 0, 0, 21, 1, 0, 0, 0, 0, 0, 0, 0, 0, 34, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 55, 1

Offset: 0

Author

Paul Barry, Feb 19 2007

Keywords

• nonn
• tabl

Comments

Row sums are A001611. Subdiagonal is A000045(n+1).

Examples

			Triangle begins
1,
1, 1,
0, 1, 1,
0, 0, 2, 1,
0, 0, 0, 3, 1,
0, 0, 0, 0, 5, 1,
0, 0, 0, 0, 0, 8, 1,
0, 0, 0, 0, 0, 0, 13, 1,
0, 0, 0, 0, 0, 0, 0, 21, 1,
0, 0, 0, 0, 0, 0, 0, 0, 34, 1,
0, 0, 0, 0, 0, 0, 0, 0, 0, 55, 1