t = | 0 | 1 | 2 | 3 | 4 | |
r = 1 | s = 0 | 1 | 2 | 4 | 7 | 12 |
r = 1 | s = 1 | 2 | 5 | 11 | 21 | 38 |
r = 1 | s = 2 | 4 | 11 | 26 | 52 | 98 |
r = 1 | s = 3 | 7 | 21 | 52 | 109 | 212 |
r = 1 | s = 4 | 12 | 38 | 98 | 212 | 424 |