n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 4 |
4 | 10 |
5 | 28 |
6 | 93 |
7 | 354 |
8 | 1621 |
9 | 9110 |
10 | 64801 |
11 | 595976 |
12 | 7204091 |
13 | 115561423 |
14 | 2473540433 |
15 | 70853213144 |
16 | 2720354016419 |
17 | 140170631441858 |
18 | 9702605436760235 |
19 | 903309202327818566 |
20 | 113234129823368903523 |
21 | 19137461395401601912043 |
22 | 4366007821745938984134203 |
[1,1,2,4,10,28,93,354,1621,9110,64801,595976, 7204091,115561423,2473540433,70853213144, 2720354016419,140170631441858,9702605436760235, 903309202327818566,113234129823368903523, 19137461395401601912043,4366007821745938984134203] |