n | a(n) |
---|---|
1 | 1 |
2 | 3 |
3 | 7 |
4 | 23 |
5 | 70 |
6 | 242 |
7 | 832 |
8 | 2983 |
9 | 10759 |
10 | 39482 |
11 | 145892 |
12 | 543877 |
13 | 2038831 |
14 | 7685211 |
15 | 29092055 |
16 | 110554267 |
17 | 421495147 |
18 | 1611676767 |
[1,3,7,23,70,242,832,2983,10759,39482,145892, 543877,2038831,7685211,29092055,110554267, 421495147,1611676767] |