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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 5 |
| 4 | 13 |
| 5 | 33 |
| 6 | 73 |
| 7 | 157 |
| 8 | 325 |
| 9 | 665 |
| 10 | 1345 |
| 11 | 2709 |
| 12 | 5437 |
| 13 | 10897 |
| 14 | 21817 |
| 15 | 43661 |
| 16 | 87349 |
| 17 | 174729 |
| 18 | 349489 |
| 19 | 699013 |
| 20 | 1398061 |
| 21 | 2796161 |
| 22 | 5592361 |
| 23 | 11184765 |
| 24 | 22369573 |
| 25 | 44739193 |
| 26 | 89478433 |
| 27 | 178956917 |
| 28 | 357913885 |
| 29 | 715827825 |
| 30 | 1431655705 |
| 31 | 2863311469 |
| 32 | 5726622997 |
| 33 | 11453246057 |
| 34 | 22906492177 |
[1,1,1,5,13,33,73,157,325,665,1345,2709,5437, 10897,21817,43661,87349,174729,349489,699013, 1398061,2796161,5592361,11184765,22369573, 44739193,89478433,178956917,357913885,715827825, 1431655705,2863311469,5726622997,11453246057, 22906492177] |