n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 17 |
3 | 65 |
4 | 230 |
5 | 736 |
6 | 2197 |
7 | 6093 |
8 | 15864 |
9 | 38960 |
10 | 90837 |
11 | 202005 |
12 | 430577 |
13 | 883057 |
14 | 1748909 |
15 | 3355213 |
16 | 6252575 |
17 | 11345602 |
18 | 20089514 |
19 | 34778306 |
20 | 58964020 |
21 | 98053576 |
22 | 160151566 |
23 | 257229974 |
24 | 406739271 |
25 | 633795181 |
26 | 974126408 |
27 | 1477999320 |
28 | 2215409037 |
29 | 3282874359 |
30 | 4812278064 |
[1,4,17,65,230,736,2197,6093,15864,38960,90837, 202005,430577,883057,1748909,3355213,6252575, 11345602,20089514,34778306,58964020,98053576, 160151566,257229974,406739271,633795181,974126408, 1477999320,2215409037,3282874359,4812278064] |