n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 11 |
3 | 31 |
4 | 161 |
5 | 601 |
6 | 2651 |
7 | 10711 |
8 | 45281 |
9 | 186961 |
10 | 781451 |
11 | 3245551 |
12 | 13524161 |
13 | 56258281 |
14 | 234234011 |
15 | 974792551 |
16 | 4057691201 |
17 | 16888515361 |
18 | 70296251531 |
19 | 292589141311 |
20 | 1217844546401 |
21 | 5068991364601 |
22 | 21098583646811 |
23 | 87818089575031 |
24 | 365523431971361 |
25 | 1521409670118001 |
26 | 6332530227978251 |
[1,1,11,31,161,601,2651,10711,45281,186961,781451, 3245551,13524161,56258281,234234011,974792551, 4057691201,16888515361,70296251531,292589141311, 1217844546401,5068991364601,21098583646811, 87818089575031,365523431971361,1521409670118001, 6332530227978251] |