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| n | a(n) |
|---|---|
| 1 | 641 |
| 2 | 915 |
| 3 | 1142 |
| 4 | 1693 |
| 5 | 2710 |
| 6 | 4342 |
| 7 | 6941 |
| 8 | 12295 |
| 9 | 20379 |
| 10 | 34247 |
| 11 | 61505 |
| 12 | 105195 |
| 13 | 178817 |
| 14 | 323844 |
| 15 | 556603 |
| 16 | 948521 |
| 17 | 1716416 |
| 18 | 2957030 |
| 19 | 5043301 |
| 20 | 9112051 |
| 21 | 15722010 |
| 22 | 26825787 |
| 23 | 48379614 |
| 24 | 83582702 |
| 25 | 142663489 |
| 26 | 256824515 |
| 27 | 444230495 |
| 28 | 758496796 |
| 29 | 1363061440 |
[641,915,1142,1693,2710,4342,6941,12295,20379, 34247,61505,105195,178817,323844,556603,948521, 1716416,2957030,5043301,9112051,15722010,26825787, 48379614,83582702,142663489,256824515,444230495, 758496796,1363061440] |