n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 12 |
4 | 55 |
5 | 274 |
6 | 1444 |
7 | 7923 |
8 | 44803 |
9 | 259326 |
10 | 1529034 |
11 | 9151733 |
12 | 55459124 |
13 | 339595673 |
14 | 2097962269 |
15 | 13060078469 |
16 | 81842038111 |
17 | 515867610612 |
18 | 3268440469234 |
19 | 20803681980270 |
20 | 132963257157430 |
21 | 852981624781996 |
22 | 5490522454007139 |
23 | 35450567948693263 |
24 | 229537971398979212 |
25 | 1490074420399924169 |
26 | 9696064337840077823 |
[1,1,3,12,55,274,1444,7923,44803,259326,1529034, 9151733,55459124,339595673,2097962269,13060078469, 81842038111,515867610612,3268440469234, 20803681980270,132963257157430,852981624781996, 5490522454007139,35450567948693263, 229537971398979212,1490074420399924169, 9696064337840077823] |