n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 9 |
4 | 28 |
5 | 96 |
6 | 331 |
7 | 1178 |
8 | 4277 |
9 | 15668 |
10 | 58207 |
11 | 217827 |
12 | 820822 |
13 | 3113057 |
14 | 11858060 |
15 | 45369618 |
16 | 174201971 |
17 | 670880989 |
18 | 2590897603 |
19 | 10028967336 |
20 | 38902441680 |
21 | 151185031351 |
22 | 588509650239 |
23 | 2294305412573 |
24 | 8956328591359 |
25 | 35005542995118 |
26 | 136969955527081 |
27 | 536476427847843 |
28 | 2103186073322950 |
[1,1,3,9,28,96,331,1178,4277,15668,58207,217827, 820822,3113057,11858060,45369618,174201971, 670880989,2590897603,10028967336,38902441680, 151185031351,588509650239,2294305412573, 8956328591359,35005542995118,136969955527081, 536476427847843,2103186073322950] |