n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 4 |
3 | 19 |
4 | 96 |
5 | 501 |
6 | 2668 |
7 | 14407 |
8 | 78592 |
9 | 432073 |
10 | 2390004 |
11 | 13286043 |
12 | 74160672 |
13 | 415382397 |
14 | 2333445468 |
15 | 13141557519 |
16 | 74174404608 |
17 | 419472490257 |
18 | 2376287945572 |
19 | 13482186743203 |
20 | 76598310928096 |
21 | 435730007006341 |
22 | 2481447593848524 |
23 | 14146164790774359 |
[0,1,4,19,96,501,2668,14407,78592,432073,2390004, 13286043,74160672,415382397,2333445468, 13141557519,74174404608,419472490257, 2376287945572,13482186743203,76598310928096, 435730007006341,2481447593848524, 14146164790774359] |