n | a(n) |
---|---|
0 | 1 |
1 | 21 |
2 | 231 |
3 | 1792 |
4 | 11067 |
5 | 58002 |
6 | 268093 |
7 | 1120899 |
8 | 4315269 |
9 | 15497986 |
10 | 52441347 |
11 | 168487473 |
12 | 517184185 |
13 | 1524390777 |
14 | 4332440454 |
15 | 11914441196 |
16 | 31798680774 |
17 | 82574231187 |
18 | 209091601271 |
19 | 517272712845 |
20 | 1252351944165 |
21 | 2971700764941 |
22 | 6920411525727 |
23 | 15835150526244 |
24 | 35640093688017 |
[1,21,231,1792,11067,58002,268093,1120899,4315269, 15497986,52441347,168487473,517184185,1524390777, 4332440454,11914441196,31798680774,82574231187, 209091601271,517272712845,1252351944165, 2971700764941,6920411525727,15835150526244, 35640093688017] |