n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 8 |
4 | 15 |
5 | 38 |
6 | 120 |
7 | 258 |
8 | 683 |
9 | 2116 |
10 | 4796 |
11 | 12800 |
12 | 39094 |
13 | 91412 |
14 | 245478 |
15 | 742376 |
16 | 1772851 |
17 | 4779936 |
18 | 14342766 |
19 | 34772193 |
20 | 94010374 |
21 | 280321572 |
22 | 687416534 |
23 | 1862299561 |
24 | 5524586198 |
25 | 13670204608 |
26 | 37092812772 |
27 | 109567253600 |
28 | 273104180926 |
29 | 741976123650 |
30 | 2183764222716 |
[1,1,3,8,15,38,120,258,683,2116,4796,12800,39094, 91412,245478,742376,1772851,4779936,14342766, 34772193,94010374,280321572,687416534,1862299561, 5524586198,13670204608,37092812772,109567253600, 273104180926,741976123650,2183764222716] |