n | a(n) |
---|---|
1 | 1 |
2 | 121 |
3 | 2161 |
4 | 15481 |
5 | 78001 |
6 | 261481 |
7 | 823201 |
8 | 1981561 |
9 | 4726081 |
10 | 9438121 |
11 | 19485841 |
12 | 33454441 |
13 | 62746321 |
14 | 99607321 |
15 | 168560161 |
16 | 253639801 |
17 | 410333761 |
18 | 571855801 |
19 | 893864881 |
20 | 1207533481 |
21 | 1778937361 |
22 | 2357786761 |
23 | 3404813281 |
24 | 4282153321 |
25 | 6093828001 |
26 | 7592304841 |
27 | 10335939121 |
[1,121,2161,15481,78001,261481,823201,1981561, 4726081,9438121,19485841,33454441,62746321, 99607321,168560161,253639801,410333761,571855801, 893864881,1207533481,1778937361,2357786761, 3404813281,4282153321,6093828001,7592304841, 10335939121] |