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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 7 |
| 5 | 12 |
| 6 | 19 |
| 7 | 23 |
| 8 | 72 |
| 9 | 103 |
| 10 | 186 |
| 11 | 349 |
| 12 | 476 |
| 13 | 1955 |
| 14 | 42806 |
| 15 | 165541 |
| 16 | 191131 |
| 17 | 700419 |
| 18 | 874395 |
| 19 | 2702144 |
| 20 | 4408232 |
| 21 | 5397917 |
| 22 | 5442858 |
| 23 | 8751594 |
| 24 | 32886598 |
| 25 | 54013149 |
| 26 | 1274902129 |
| 27 | 1337169719 |
| 28 | 1419213312 |
| 29 | 2141194665 |
| 30 | 53879079616 |
| 31 | 100000000001 |
[1,2,3,7,12,19,23,72,103,186,349,476,1955,42806, 165541,191131,700419,874395,2702144,4408232, 5397917,5442858,8751594,32886598,54013149, 1274902129,1337169719,1419213312,2141194665, 53879079616,100000000001] |