n | a(n) |
---|---|
0 | 1 |
1 | 54 |
2 | 828 |
3 | 5202 |
4 | 20376 |
5 | 60030 |
6 | 146484 |
7 | 312858 |
8 | 605232 |
9 | 1084806 |
10 | 1830060 |
11 | 2938914 |
12 | 4530888 |
13 | 6749262 |
14 | 9763236 |
15 | 13770090 |
16 | 18997344 |
17 | 25704918 |
18 | 34187292 |
19 | 44775666 |
20 | 57840120 |
21 | 73791774 |
22 | 93084948 |
[1,54,828,5202,20376,60030,146484,312858,605232, 1084806,1830060,2938914,4530888,6749262,9763236, 13770090,18997344,25704918,34187292,44775666, 57840120,73791774,93084948] |