n | a(n) |
---|---|
1 | 1 |
2 | 4 |
3 | 17 |
4 | 68 |
5 | 273 |
6 | 1092 |
7 | 4369 |
8 | 17476 |
9 | 69905 |
10 | 279620 |
11 | 1118481 |
12 | 4473924 |
13 | 17895697 |
14 | 71582788 |
15 | 286331153 |
16 | 1145324612 |
17 | 4581298449 |
18 | 18325193796 |
19 | 73300775185 |
20 | 293203100740 |
21 | 1172812402961 |
22 | 4691249611844 |
23 | 18764998447377 |
24 | 75059993789508 |
[1,4,17,68,273,1092,4369,17476,69905,279620, 1118481,4473924,17895697,71582788,286331153, 1145324612,4581298449,18325193796,73300775185, 293203100740,1172812402961,4691249611844, 18764998447377,75059993789508] |