n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 10 |
3 | 62 |
4 | 426 |
5 | 3112 |
6 | 23686 |
7 | 185684 |
8 | 1488554 |
9 | 12144248 |
10 | 100489320 |
11 | 841268078 |
12 | 7112138790 |
13 | 60629940152 |
14 | 520591221412 |
15 | 4498091003272 |
16 | 39079909924522 |
17 | 341193986978008 |
18 | 2991881019936760 |
19 | 26338436818801496 |
20 | 232688056611178216 |
[1,2,10,62,426,3112,23686,185684,1488554,12144248, 100489320,841268078,7112138790,60629940152, 520591221412,4498091003272,39079909924522, 341193986978008,2991881019936760, 26338436818801496,232688056611178216] |