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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 8 |
| 5 | 16 |
| 6 | 77 |
| 7 | 154 |
| 8 | 695 |
| 9 | 1264 |
| 10 | 3905 |
| 11 | 4444 |
| 12 | 8888 |
| 13 | 17776 |
| 14 | 93953 |
| 15 | 133348 |
| 16 | 481481 |
| 17 | 1296295 |
| 18 | 7591424 |
| 19 | 11839015 |
| 20 | 50854133 |
| 21 | 92189218 |
| 22 | 114081407 |
| 23 | 928152547 |
| 24 | 1182945362 |
| 25 | 10636566544 |
| 26 | 47203110650 |
| 27 | 78309615370 |
| 28 | 139846693679 |
| 29 | 606783485077 |
| 30 | 955291245755 |
| 31 | 1201047201046 |
[1,2,4,8,16,77,154,695,1264,3905,4444,8888,17776, 93953,133348,481481,1296295,7591424,11839015, 50854133,92189218,114081407,928152547,1182945362, 10636566544,47203110650,78309615370,139846693679, 606783485077,955291245755,1201047201046] |