n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 6 |
3 | 51 |
4 | 506 |
5 | 5481 |
6 | 62832 |
7 | 749398 |
8 | 9203634 |
9 | 115607310 |
10 | 1478314266 |
11 | 19180049928 |
12 | 251857119696 |
13 | 3340843549855 |
14 | 44700485049720 |
15 | 602574657427116 |
16 | 8175951659117794 |
17 | 111572030260242090 |
18 | 1530312970340384580 |
19 | 21085148778264281865 |
20 | 291705220704719165526 |
[1,1,6,51,506,5481,62832,749398,9203634,115607310, 1478314266,19180049928,251857119696,3340843549855, 44700485049720,602574657427116,8175951659117794, 111572030260242090,1530312970340384580, 21085148778264281865,291705220704719165526] |