n | a(n) |
---|---|
1 | 1 |
2 | 6 |
3 | 25 |
4 | 104 |
5 | 414 |
6 | 1636 |
7 | 6375 |
8 | 24591 |
9 | 94257 |
10 | 360002 |
11 | 1371535 |
12 | 5216252 |
13 | 19819846 |
14 | 75277670 |
15 | 285893124 |
16 | 1085984406 |
17 | 4126777398 |
18 | 15690144942 |
19 | 59691687518 |
20 | 227248928264 |
21 | 865788366806 |
22 | 3301087870766 |
23 | 12596381911969 |
24 | 48104063936789 |
[1,6,25,104,414,1636,6375,24591,94257,360002, 1371535,5216252,19819846,75277670,285893124, 1085984406,4126777398,15690144942,59691687518, 227248928264,865788366806,3301087870766, 12596381911969,48104063936789] |