n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 4 |
3 | 21 |
4 | 76 |
5 | 329 |
6 | 1256 |
7 | 5157 |
8 | 20216 |
9 | 81505 |
10 | 322924 |
11 | 1293189 |
12 | 5144644 |
13 | 20550089 |
14 | 81881168 |
15 | 326756661 |
16 | 1302722672 |
17 | 5196774145 |
18 | 20723304532 |
19 | 82657204533 |
20 | 329642305468 |
21 | 1314745861769 |
22 | 5243461810232 |
23 | 20912613564549 |
24 | 83404589311592 |
[0,1,4,21,76,329,1256,5157,20216,81505,322924, 1293189,5144644,20550089,81881168,326756661, 1302722672,5196774145,20723304532,82657204533, 329642305468,1314745861769,5243461810232, 20912613564549,83404589311592] |