n | a(n) |
---|---|
0 | 0 |
1 | 3 |
2 | 31 |
3 | 251 |
4 | 1485 |
5 | 6665 |
6 | 24073 |
7 | 73486 |
8 | 196626 |
9 | 473595 |
10 | 1047255 |
11 | 2157793 |
12 | 4189991 |
13 | 7736001 |
14 | 13676705 |
15 | 23285020 |
16 | 38354788 |
17 | 61359171 |
18 | 95642751 |
19 | 145651815 |
20 | 217207585 |
21 | 317827433 |
22 | 457099401 |
23 | 647115626 |
24 | 902970550 |
25 | 1243330075 |
26 | 1691078103 |
27 | 2274047181 |
[0,3,31,251,1485,6665,24073,73486,196626,473595, 1047255,2157793,4189991,7736001,13676705,23285020, 38354788,61359171,95642751,145651815,217207585, 317827433,457099401,647115626,902970550, 1243330075,1691078103,2274047181] |