A117139 Similar to A117137 but begin each row with 0. Equals A117137 - 1.
0, 0, 1, 3, 0, 2, 5, 1, 6, 0, 3, 7, 2, 8, 1, 9, 0, 4, 9, 3, 10, 2, 11, 1, 12, 0, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15, 0, 6, 13, 5, 14, 4, 15, 3, 16, 2, 17, 1, 18, 0
Offset: 0