n | a(n) |
---|---|
0 | 1 |
1 | 9 |
2 | 40545 |
3 | 1372105 |
4 | 15003009 |
5 | 93149001 |
6 | 409389409 |
7 | 1423656585 |
8 | 4178507265 |
9 | 10783446409 |
10 | 25154396001 |
11 | 54085723209 |
12 | 108742564225 |
13 | 206671502025 |
14 | 374437978209 |
15 | 651009141001 |
16 | 1092011153409 |
17 | 1775000307465 |
18 | 2805897612385 |
19 | 4326746846409 |
20 | 6524966384001 |
21 | 9644275432009 |
[1,9,40545,1372105,15003009,93149001,409389409, 1423656585,4178507265,10783446409,25154396001, 54085723209,108742564225,206671502025, 374437978209,651009141001,1092011153409, 1775000307465,2805897612385,4326746846409, 6524966384001,9644275432009] |