n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 8 |
3 | 35 |
4 | 107 |
5 | 421 |
6 | 1312 |
7 | 4474 |
8 | 13622 |
9 | 43977 |
10 | 130473 |
11 | 388025 |
12 | 1146640 |
13 | 3265446 |
14 | 9352424 |
15 | 26033637 |
16 | 72144351 |
17 | 196664848 |
18 | 532768901 |
19 | 1422725368 |
20 | 3768251677 |
21 | 9893857617 |
22 | 25709347054 |
23 | 66367179293 |
24 | 169754459790 |
25 | 431237516979 |
26 | 1086813719408 |
27 | 2722241654623 |
[1,1,8,35,107,421,1312,4474,13622,43977,130473, 388025,1146640,3265446,9352424,26033637,72144351, 196664848,532768901,1422725368,3768251677, 9893857617,25709347054,66367179293,169754459790, 431237516979,1086813719408,2722241654623] |