n | a(n) |
---|---|
0 | 1 |
1 | 181 |
2 | 6621 |
3 | 101241 |
4 | 903881 |
5 | 5590989 |
6 | 26515269 |
7 | 102908209 |
8 | 341661649 |
9 | 1001294629 |
10 | 2650436845 |
11 | 6447019305 |
12 | 14603375385 |
13 | 31126140605 |
14 | 62948716245 |
15 | 121608649569 |
16 | 225663101089 |
17 | 404083136149 |
18 | 700922413309 |
19 | 1181618464729 |
20 | 1941355693161 |
21 | 3115998965421 |
22 | 4896195782501 |
[1,181,6621,101241,903881,5590989,26515269, 102908209,341661649,1001294629,2650436845, 6447019305,14603375385,31126140605,62948716245, 121608649569,225663101089,404083136149, 700922413309,1181618464729,1941355693161, 3115998965421,4896195782501] |