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| n | a(n) |
|---|---|
| 1 | 638 |
| 2 | 1150 |
| 3 | 2104 |
| 4 | 3872 |
| 5 | 7143 |
| 6 | 13185 |
| 7 | 24322 |
| 8 | 44794 |
| 9 | 82294 |
| 10 | 150686 |
| 11 | 274744 |
| 12 | 501524 |
| 13 | 917116 |
| 14 | 1679070 |
| 15 | 3076254 |
| 16 | 5638155 |
| 17 | 10334814 |
| 18 | 18942534 |
| 19 | 34712677 |
| 20 | 63595283 |
| 21 | 116481088 |
| 22 | 213319856 |
| 23 | 390670798 |
| 24 | 715523414 |
| 25 | 1310607210 |
| 26 | 2400758159 |
[638,1150,2104,3872,7143,13185,24322,44794,82294, 150686,274744,501524,917116,1679070,3076254, 5638155,10334814,18942534,34712677,63595283, 116481088,213319856,390670798,715523414, 1310607210,2400758159] |