n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 5 |
3 | 19 |
4 | 69 |
5 | 277 |
6 | 1185 |
7 | 5009 |
8 | 21325 |
9 | 92733 |
10 | 408629 |
11 | 1807995 |
12 | 8038887 |
13 | 35981881 |
14 | 162014757 |
15 | 732494001 |
16 | 3321753179 |
17 | 15111904573 |
18 | 68984336243 |
19 | 315806352009 |
20 | 1448850054545 |
21 | 6660481232055 |
22 | 30684420675499 |
23 | 141639855244171 |
24 | 654874542763787 |
25 | 3032247286729153 |
26 | 14060715339443201 |
27 | 65292539049162537 |
[1,1,5,19,69,277,1185,5009,21325,92733,408629, 1807995,8038887,35981881,162014757,732494001, 3321753179,15111904573,68984336243,315806352009, 1448850054545,6660481232055,30684420675499, 141639855244171,654874542763787,3032247286729153, 14060715339443201,65292539049162537] |