n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 7 |
4 | 23 |
5 | 76 |
6 | 99 |
7 | 175 |
8 | 9899 |
9 | 10074 |
10 | 19973 |
11 | 69993 |
12 | 229952 |
13 | 759849 |
14 | 989801 |
15 | 1749650 |
16 | 98970201 |
17 | 100719851 |
18 | 199690052 |
19 | 699790007 |
20 | 2299060073 |
21 | 7596970226 |
22 | 9896030299 |
23 | 17493000525 |
24 | 989504059699 |
25 | 1006997060224 |
26 | 1996501119923 |
27 | 6996500419993 |
28 | 22986002379902 |
[1,1,2,7,23,76,99,175,9899,10074,19973,69993, 229952,759849,989801,1749650,98970201,100719851, 199690052,699790007,2299060073,7596970226, 9896030299,17493000525,989504059699,1006997060224, 1996501119923,6996500419993,22986002379902] |