n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 8 |
4 | 26 |
5 | 86 |
6 | 305 |
7 | 1104 |
8 | 4127 |
9 | 15865 |
10 | 61291 |
11 | 242393 |
12 | 972891 |
13 | 3914605 |
14 | 15992813 |
15 | 66039145 |
16 | 272797057 |
17 | 1139731760 |
18 | 4799616692 |
19 | 20201380611 |
20 | 85786198770 |
21 | 366534573684 |
22 | 1564618416246 |
23 | 6727065028303 |
24 | 29066076665305 |
25 | 125444611684962 |
26 | 544649409416965 |
27 | 2374412332299237 |
28 | 10338463313918359 |
[1,1,3,8,26,86,305,1104,4127,15865,61291,242393, 972891,3914605,15992813,66039145,272797057, 1139731760,4799616692,20201380611,85786198770, 366534573684,1564618416246,6727065028303, 29066076665305,125444611684962,544649409416965, 2374412332299237,10338463313918359] |