n | a(n) |
---|---|
0 | 0 |
1 | 4 |
2 | 35 |
3 | 228 |
4 | 1287 |
5 | 6820 |
6 | 34667 |
7 | 171332 |
8 | 829455 |
9 | 3952836 |
10 | 18604979 |
11 | 86693156 |
12 | 400623383 |
13 | 1838490212 |
14 | 8387044091 |
15 | 38065809540 |
16 | 171999313951 |
17 | 774138335108 |
18 | 3472202765123 |
19 | 15525625108324 |
20 | 69229056160039 |
21 | 307921937307684 |
22 | 1366491508589195 |
23 | 6051666872017348 |
[0,4,35,228,1287,6820,34667,171332,829455,3952836, 18604979,86693156,400623383,1838490212,8387044091, 38065809540,171999313951,774138335108, 3472202765123,15525625108324,69229056160039, 307921937307684,1366491508589195,6051666872017348] |