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| n | a(n) |
|---|---|
| 1 | 115 |
| 2 | 371 |
| 3 | 1310 |
| 4 | 4576 |
| 5 | 16386 |
| 6 | 59681 |
| 7 | 217262 |
| 8 | 791181 |
| 9 | 2886865 |
| 10 | 10536452 |
| 11 | 38448744 |
| 12 | 140326648 |
| 13 | 512194269 |
| 14 | 1869459662 |
| 15 | 6823369543 |
| 16 | 24905092259 |
| 17 | 90902668054 |
| 18 | 331790760244 |
| 19 | 1211023928212 |
| 20 | 4420193626025 |
| 21 | 16133540310758 |
| 22 | 58886821611133 |
[115,371,1310,4576,16386,59681,217262,791181, 2886865,10536452,38448744,140326648,512194269, 1869459662,6823369543,24905092259,90902668054, 331790760244,1211023928212,4420193626025, 16133540310758,58886821611133] |