n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 26 |
3 | 244 |
4 | 3131 |
5 | 52600 |
6 | 1111940 |
7 | 28559320 |
8 | 865622825 |
9 | 30250881420 |
10 | 1196941704454 |
11 | 52860066623036 |
12 | 2576115583371739 |
13 | 137274420821505776 |
14 | 7937914900025008984 |
15 | 494941882189888642832 |
16 | 33096552232229291234923 |
[1,4,26,244,3131,52600,1111940,28559320,865622825, 30250881420,1196941704454,52860066623036, 2576115583371739,137274420821505776, 7937914900025008984,494941882189888642832, 33096552232229291234923] |