n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 6 |
3 | 31 |
4 | 230 |
5 | 2106 |
6 | 22309 |
7 | 265490 |
8 | 3491364 |
9 | 50191633 |
10 | 782625062 |
11 | 13155329058 |
12 | 237183163807 |
13 | 4566977815064 |
14 | 93561632638164 |
15 | 2032495366177429 |
16 | 46677419939036132 |
17 | 1130141423614269072 |
18 | 28774960495683155947 |
[1,2,6,31,230,2106,22309,265490,3491364,50191633, 782625062,13155329058,237183163807,4566977815064, 93561632638164,2032495366177429,46677419939036132, 1130141423614269072,28774960495683155947] |