n | a(n) |
---|---|
1 | 0 |
2 | 72 |
3 | 1578 |
4 | 9715 |
5 | 41931 |
6 | 155560 |
7 | 521862 |
8 | 1635481 |
9 | 4878157 |
10 | 14014639 |
11 | 39104351 |
12 | 106631105 |
13 | 285454905 |
14 | 752759713 |
15 | 1960409283 |
16 | 5051884455 |
17 | 12901249792 |
18 | 32688874902 |
19 | 82257457021 |
20 | 205730877021 |
21 | 511748655573 |
22 | 1266736498098 |
[0,72,1578,9715,41931,155560,521862,1635481, 4878157,14014639,39104351,106631105,285454905, 752759713,1960409283,5051884455,12901249792, 32688874902,82257457021,205730877021,511748655573, 1266736498098] |