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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 5 |
| 5 | 10 |
| 6 | 21 |
| 7 | 45 |
| 8 | 100 |
| 9 | 225 |
| 10 | 515 |
| 11 | 1190 |
| 12 | 2780 |
| 13 | 6550 |
| 14 | 15555 |
| 15 | 37187 |
| 16 | 89428 |
| 17 | 216163 |
| 18 | 524890 |
| 19 | 1279727 |
| 20 | 3131526 |
| 21 | 7688383 |
| 22 | 18933352 |
| 23 | 46754406 |
| 24 | 115750501 |
| 25 | 287238398 |
| 26 | 714340089 |
| 27 | 1780091533 |
| 28 | 4444198347 |
| 29 | 11114847215 |
| 30 | 27843451884 |
| 31 | 69856594565 |
| 32 | 175515654498 |
[1,2,3,5,10,21,45,100,225,515,1190,2780,6550, 15555,37187,89428,216163,524890,1279727,3131526, 7688383,18933352,46754406,115750501,287238398, 714340089,1780091533,4444198347,11114847215, 27843451884,69856594565,175515654498] |