n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 18 |
3 | 134 |
4 | 1010 |
5 | 7788 |
6 | 60978 |
7 | 482708 |
8 | 3853338 |
9 | 30964238 |
10 | 250150176 |
11 | 2029781310 |
12 | 16530857930 |
13 | 135051216620 |
14 | 1106287906140 |
15 | 9083459084364 |
16 | 74734798117570 |
17 | 615998603183550 |
18 | 5085522355488150 |
19 | 42045309424052250 |
20 | 348067638153560040 |
21 | 2884832348569699340 |
[1,2,18,134,1010,7788,60978,482708,3853338, 30964238,250150176,2029781310,16530857930, 135051216620,1106287906140,9083459084364, 74734798117570,615998603183550,5085522355488150, 42045309424052250,348067638153560040, 2884832348569699340] |