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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 4 |
| 3 | 8 |
| 4 | 16 |
| 5 | 61 |
| 6 | 122 |
| 7 | 221 |
| 8 | 442 |
| 9 | 884 |
| 10 | 1768 |
| 11 | 8671 |
| 12 | 17342 |
| 13 | 24371 |
| 14 | 48742 |
| 15 | 97484 |
| 16 | 194968 |
| 17 | 869491 |
| 18 | 1738982 |
| 19 | 2898371 |
| 20 | 5796742 |
| 21 | 11593484 |
| 22 | 48439511 |
| 23 | 96879022 |
| 24 | 193758044 |
| 25 | 440857391 |
| 26 | 881714782 |
| 27 | 1763429564 |
| 28 | 4659243671 |
| 29 | 9318487342 |
| 30 | 18636974684 |
| 31 | 48647963681 |
[1,2,4,8,16,61,122,221,442,884,1768,8671,17342, 24371,48742,97484,194968,869491,1738982,2898371, 5796742,11593484,48439511,96879022,193758044, 440857391,881714782,1763429564,4659243671, 9318487342,18636974684,48647963681] |