n | a(n) |
---|---|
1 | 0 |
2 | 1 |
3 | 15 |
4 | 250 |
5 | 251 |
6 | 3980 |
7 | 3981 |
8 | 63095 |
9 | 999999 |
10 | 1000000 |
11 | 15848931 |
12 | 251188642 |
13 | 251188643 |
14 | 3981071705 |
15 | 63095734447 |
16 | 63095734448 |
17 | 999999999999 |
18 | 1000000000000 |
19 | 15848931924610 |
20 | 15848931924611 |
21 | 251188643150957 |
22 | 251188643150958 |
23 | 3981071705534972 |
24 | 63095734448019324 |
[0,1,15,250,251,3980,3981,63095,999999,1000000, 15848931,251188642,251188643,3981071705, 63095734447,63095734448,999999999999, 1000000000000,15848931924610,15848931924611, 251188643150957,251188643150958,3981071705534972, 63095734448019324] |