n | a(n) |
---|---|
0 | 1 |
1 | 31 |
2 | 495 |
3 | 5425 |
4 | 45879 |
5 | 319145 |
6 | 1900920 |
7 | 9965384 |
8 | 46909324 |
9 | 201295028 |
10 | 796809245 |
11 | 2937251395 |
12 | 10161553364 |
13 | 33205476524 |
14 | 103050077489 |
15 | 305131440111 |
16 | 865481871426 |
17 | 2359754902590 |
18 | 6203436293890 |
19 | 15765840836350 |
20 | 38828731002622 |
[1,31,495,5425,45879,319145,1900920,9965384, 46909324,201295028,796809245,2937251395, 10161553364,33205476524,103050077489,305131440111, 865481871426,2359754902590,6203436293890, 15765840836350,38828731002622] |