n | a(n) |
---|---|
0 | 0 |
1 | 7 |
2 | 54 |
3 | 376 |
4 | 2583 |
5 | 17710 |
6 | 121392 |
7 | 832039 |
8 | 5702886 |
9 | 39088168 |
10 | 267914295 |
11 | 1836311902 |
12 | 12586269024 |
13 | 86267571271 |
14 | 591286729878 |
15 | 4052739537880 |
16 | 27777890035287 |
17 | 190392490709134 |
18 | 1304969544928656 |
19 | 8944394323791463 |
20 | 61305790721611590 |
21 | 420196140727489672 |
[0,7,54,376,2583,17710,121392,832039,5702886, 39088168,267914295,1836311902,12586269024, 86267571271,591286729878,4052739537880, 27777890035287,190392490709134,1304969544928656, 8944394323791463,61305790721611590, 420196140727489672] |