n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 21 |
3 | 421 |
4 | 8421 |
5 | 168421 |
6 | 3368421 |
7 | 67368421 |
8 | 1347368421 |
9 | 26947368421 |
10 | 538947368421 |
11 | 10778947368421 |
12 | 215578947368421 |
13 | 4311578947368421 |
14 | 86231578947368421 |
15 | 1724631578947368421 |
16 | 34492631578947368421 |
17 | 689852631578947368421 |
18 | 13797052631578947368421 |
19 | 275941052631578947368421 |
[0,1,21,421,8421,168421,3368421,67368421, 1347368421,26947368421,538947368421, 10778947368421,215578947368421,4311578947368421, 86231578947368421,1724631578947368421, 34492631578947368421,689852631578947368421, 13797052631578947368421,275941052631578947368421] |