n | a(n) |
---|---|
1 | 1 |
2 | 3 |
3 | 11 |
4 | 45 |
5 | 228 |
6 | 1369 |
7 | 9585 |
8 | 76684 |
9 | 690164 |
10 | 6901640 |
11 | 75918047 |
12 | 911016565 |
13 | 11843215346 |
14 | 165805014854 |
15 | 2487075222810 |
16 | 39793203564972 |
17 | 676484460604539 |
18 | 12176720290881708 |
19 | 231357685526752468 |
20 | 4627153710535049363 |
[1,3,11,45,228,1369,9585,76684,690164,6901640, 75918047,911016565,11843215346,165805014854, 2487075222810,39793203564972,676484460604539, 12176720290881708,231357685526752468, 4627153710535049363] |