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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 7 |
| 3 | 21 |
| 4 | 53 |
| 5 | 111 |
| 6 | 203 |
| 7 | 337 |
| 8 | 521 |
| 9 | 763 |
| 10 | 1071 |
| 11 | 1453 |
| 12 | 1917 |
| 13 | 2471 |
| 14 | 3123 |
| 15 | 3881 |
| 16 | 4753 |
| 17 | 5747 |
| 18 | 6871 |
| 19 | 8133 |
| 20 | 9541 |
| 21 | 11103 |
| 22 | 12827 |
| 23 | 14721 |
| 24 | 16793 |
| 25 | 19051 |
| 26 | 21503 |
| 27 | 24157 |
| 28 | 27021 |
| 29 | 30103 |
| 30 | 33411 |
| 31 | 36953 |
| 32 | 40737 |
| 33 | 44771 |
| 34 | 49063 |
| 35 | 53621 |
| 36 | 58453 |
| 37 | 63567 |
| 38 | 68971 |
| 39 | 74673 |
[1,3,7,21,53,111,203,337,521,763,1071,1453,1917, 2471,3123,3881,4753,5747,6871,8133,9541,11103, 12827,14721,16793,19051,21503,24157,27021,30103, 33411,36953,40737,44771,49063,53621,58453,63567, 68971,74673] |