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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 3 |
| 4 | 5 |
| 5 | 7 |
| 6 | 15 |
| 7 | 27 |
| 8 | 43 |
| 9 | 81 |
| 10 | 147 |
| 11 | 249 |
| 12 | 449 |
| 13 | 809 |
| 14 | 1409 |
| 15 | 2507 |
| 16 | 4485 |
| 17 | 7903 |
| 18 | 14015 |
| 19 | 24963 |
| 20 | 44187 |
| 21 | 78329 |
| 22 | 139203 |
| 23 | 246801 |
| 24 | 437601 |
| 25 | 776881 |
| 26 | 1378081 |
| 27 | 2444083 |
| 28 | 4337125 |
| 29 | 7694487 |
| 30 | 13648655 |
| 31 | 24215947 |
| 32 | 42962283 |
| 33 | 76213761 |
| 34 | 135212947 |
| 35 | 239883849 |
| 36 | 425562849 |
| 37 | 754987929 |
[1,1,1,3,5,7,15,27,43,81,147,249,449,809,1409, 2507,4485,7903,14015,24963,44187,78329,139203, 246801,437601,776881,1378081,2444083,4337125, 7694487,13648655,24215947,42962283,76213761, 135212947,239883849,425562849,754987929] |