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| n | a(n) |
|---|---|
| 1 | 906 |
| 2 | 1684 |
| 3 | 3190 |
| 4 | 6360 |
| 5 | 14974 |
| 6 | 36244 |
| 7 | 91122 |
| 8 | 247372 |
| 9 | 681262 |
| 10 | 1906656 |
| 11 | 5492470 |
| 12 | 15919324 |
| 13 | 46439466 |
| 14 | 136964884 |
| 15 | 405022630 |
| 16 | 1200958440 |
| 17 | 3576601774 |
| 18 | 10663915684 |
| 19 | 31832655522 |
| 20 | 95194295452 |
| 21 | 284820551902 |
| 22 | 852619865136 |
| 23 | 2554290632230 |
[906,1684,3190,6360,14974,36244,91122,247372, 681262,1906656,5492470,15919324,46439466, 136964884,405022630,1200958440,3576601774, 10663915684,31832655522,95194295452,284820551902, 852619865136,2554290632230] |