n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 4 |
4 | 7 |
5 | 34 |
6 | 70 |
7 | 368 |
8 | 819 |
9 | 4495 |
10 | 10472 |
11 | 59052 |
12 | 141778 |
13 | 814506 |
14 | 1997688 |
15 | 11633440 |
16 | 28989675 |
17 | 170574723 |
18 | 430321633 |
19 | 2552698720 |
20 | 6503352856 |
21 | 38832808586 |
22 | 99726673130 |
23 | 598724403680 |
24 | 1547847846090 |
25 | 9335085772194 |
26 | 24269405074740 |
27 | 146936230074004 |
28 | 383846168712104 |
[1,1,1,4,7,34,70,368,819,4495,10472,59052,141778, 814506,1997688,11633440,28989675,170574723, 430321633,2552698720,6503352856,38832808586, 99726673130,598724403680,1547847846090, 9335085772194,24269405074740,146936230074004, 383846168712104] |