n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 5 |
3 | 19 |
4 | 69 |
5 | 235 |
6 | 789 |
7 | 2603 |
8 | 8533 |
9 | 27819 |
10 | 90453 |
11 | 293547 |
12 | 951637 |
13 | 3082923 |
14 | 9983317 |
15 | 32320171 |
16 | 104617301 |
17 | 338602667 |
18 | 1095849301 |
19 | 3546458795 |
20 | 11477013845 |
21 | 37141260971 |
22 | 120193373525 |
23 | 388957383339 |
24 | 1258699445589 |
25 | 4073250794155 |
26 | 13181344109909 |
27 | 42655780874923 |
[0,1,5,19,69,235,789,2603,8533,27819,90453,293547, 951637,3082923,9983317,32320171,104617301, 338602667,1095849301,3546458795,11477013845, 37141260971,120193373525,388957383339, 1258699445589,4073250794155,13181344109909, 42655780874923] |