n | a(n) |
---|---|
1 | 1 |
2 | 4 |
3 | 75 |
4 | 384 |
5 | 1805 |
6 | 8100 |
7 | 35287 |
8 | 150528 |
9 | 632025 |
10 | 2620860 |
11 | 10759331 |
12 | 43804800 |
13 | 177105253 |
14 | 711809364 |
15 | 2846259375 |
16 | 11330543616 |
17 | 44929049777 |
18 | 177540878700 |
19 | 699402223099 |
20 | 2747583822720 |
21 | 10766828545725 |
22 | 42095796462852 |
23 | 164244726238343 |
24 | 639620518118400 |
25 | 2486558615814025 |
[1,4,75,384,1805,8100,35287,150528,632025,2620860, 10759331,43804800,177105253,711809364,2846259375, 11330543616,44929049777,177540878700,699402223099, 2747583822720,10766828545725,42095796462852, 164244726238343,639620518118400,2486558615814025] |