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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 5 |
| 5 | 6 |
| 6 | 9 |
| 7 | 12 |
| 8 | 21 |
| 9 | 30 |
| 10 | 58 |
| 11 | 86 |
| 12 | 176 |
| 13 | 266 |
| 14 | 563 |
| 15 | 860 |
| 16 | 1861 |
| 17 | 2862 |
| 18 | 6294 |
| 19 | 9726 |
| 20 | 21660 |
| 21 | 33594 |
| 22 | 75584 |
| 23 | 117574 |
| 24 | 266800 |
| 25 | 416026 |
| 26 | 950914 |
| 27 | 1485802 |
| 28 | 3417342 |
| 29 | 5348882 |
| 30 | 12369287 |
| 31 | 19389692 |
| 32 | 45052517 |
| 33 | 70715342 |
| 34 | 165002462 |
| 35 | 259289582 |
| 36 | 607283492 |
| 37 | 955277402 |
| 38 | 2244901892 |
[1,1,1,2,5,6,9,12,21,30,58,86,176,266,563,860, 1861,2862,6294,9726,21660,33594,75584,117574, 266800,416026,950914,1485802,3417342,5348882, 12369287,19389692,45052517,70715342,165002462, 259289582,607283492,955277402,2244901892] |