n | a(n) |
---|---|
0 | 0 |
1 | 6 |
2 | 68 |
3 | 442 |
4 | 2218 |
5 | 9528 |
6 | 36834 |
7 | 131856 |
8 | 445000 |
9 | 1433294 |
10 | 4444006 |
11 | 13349510 |
12 | 39041224 |
13 | 111583236 |
14 | 312618368 |
15 | 860662498 |
16 | 2333112020 |
17 | 6238124024 |
18 | 16474149036 |
19 | 43023953304 |
20 | 111230237224 |
21 | 284926172100 |
22 | 723731637254 |
[0,6,68,442,2218,9528,36834,131856,445000,1433294, 4444006,13349510,39041224,111583236,312618368, 860662498,2333112020,6238124024,16474149036, 43023953304,111230237224,284926172100, 723731637254] |