n | a(n) |
---|---|
0 | 1 |
1 | 12 |
2 | 90 |
3 | 544 |
4 | 2823 |
5 | 13116 |
6 | 55982 |
7 | 222936 |
8 | 838011 |
9 | 2998896 |
10 | 10282986 |
11 | 33959016 |
12 | 108458924 |
13 | 336141084 |
14 | 1013801700 |
15 | 2982628712 |
16 | 8577246237 |
17 | 24152726184 |
18 | 66699488360 |
19 | 180885417408 |
20 | 482312100000 |
21 | 1265779076680 |
22 | 3272696917782 |
23 | 8343402502128 |
24 | 20989675199987 |
25 | 52143220175940 |
[1,12,90,544,2823,13116,55982,222936,838011, 2998896,10282986,33959016,108458924,336141084, 1013801700,2982628712,8577246237,24152726184, 66699488360,180885417408,482312100000, 1265779076680,3272696917782,8343402502128, 20989675199987,52143220175940] |