n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 4 |
3 | 28 |
4 | 250 |
5 | 2558 |
6 | 28594 |
7 | 340486 |
8 | 4255344 |
9 | 55300776 |
10 | 742732646 |
11 | 10267434138 |
12 | 145692400018 |
13 | 2118364506746 |
14 | 31529605958892 |
15 | 480186833802260 |
16 | 7483472464151002 |
17 | 119397596900634238 |
18 | 1951747376021480874 |
19 | 32721008993895160926 |
20 | 563260078608381337148 |
21 | 9967709437187109520736 |
22 | 181544883799333028286098 |
23 | 3406426523158387599683478 |
24 | 65894531117591548919270114 |
[1,1,4,28,250,2558,28594,340486,4255344,55300776, 742732646,10267434138,145692400018,2118364506746, 31529605958892,480186833802260,7483472464151002, 119397596900634238,1951747376021480874, 32721008993895160926,563260078608381337148, 9967709437187109520736,181544883799333028286098, 3406426523158387599683478, 65894531117591548919270114] |