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| n | a(n) |
|---|---|
| 0 | 877 |
| 1 | 2610 |
| 2 | 8155 |
| 3 | 26683 |
| 4 | 91226 |
| 5 | 325269 |
| 6 | 1207433 |
| 7 | 4659138 |
| 8 | 31638625 |
| 9 | 226700129 |
| 10 | 1706405350 |
| 11 | 13444776915 |
| 12 | 110551467873 |
| 13 | 946239709234 |
| 14 | 8411911367949 |
| 15 | 77516031008215 |
| 16 | 739149177177058 |
| 17 | 7281732769622257 |
| 18 | 74008803391105733 |
| 19 | 775028854348141814 |
| 20 | 8352686346980388993 |
[877,2610,8155,26683,91226,325269,1207433,4659138, 31638625,226700129,1706405350,13444776915, 110551467873,946239709234,8411911367949, 77516031008215,739149177177058,7281732769622257, 74008803391105733,775028854348141814, 8352686346980388993] |