n | a(n) |
---|---|
1 | 3 |
2 | 8 |
3 | 23 |
4 | 70 |
5 | 222 |
6 | 726 |
7 | 2431 |
8 | 8294 |
9 | 28730 |
10 | 100776 |
11 | 357238 |
12 | 1277788 |
13 | 4605980 |
14 | 16715250 |
15 | 61020495 |
16 | 223931910 |
17 | 825632610 |
18 | 3056887680 |
19 | 11360977650 |
20 | 42368413620 |
21 | 158498860260 |
22 | 594636663660 |
23 | 2236748680998 |
24 | 8433988655580 |
[3,8,23,70,222,726,2431,8294,28730,100776,357238, 1277788,4605980,16715250,61020495,223931910, 825632610,3056887680,11360977650,42368413620, 158498860260,594636663660,2236748680998, 8433988655580] |