n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 6 |
3 | 18 |
4 | 55 |
5 | 150 |
6 | 424 |
7 | 1113 |
8 | 2923 |
9 | 7401 |
10 | 18510 |
11 | 45271 |
12 | 109297 |
13 | 259447 |
14 | 608428 |
15 | 1407958 |
16 | 3222132 |
17 | 7292198 |
18 | 16340830 |
19 | 36265672 |
20 | 79775931 |
21 | 173999194 |
22 | 376497975 |
23 | 808471181 |
24 | 1723592762 |
25 | 3649271887 |
26 | 7675809680 |
27 | 16043777217 |
28 | 33332888108 |
29 | 68853608216 |
30 | 141438908854 |
31 | 288994878713 |
32 | 587458691042 |
[1,1,6,18,55,150,424,1113,2923,7401,18510,45271, 109297,259447,608428,1407958,3222132,7292198, 16340830,36265672,79775931,173999194,376497975, 808471181,1723592762,3649271887,7675809680, 16043777217,33332888108,68853608216,141438908854, 288994878713,587458691042] |