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| n | a(n) |
|---|---|
| 1 | 64 |
| 2 | 559 |
| 3 | 3558 |
| 4 | 19030 |
| 5 | 90398 |
| 6 | 393133 |
| 7 | 1595475 |
| 8 | 6121871 |
| 9 | 22418665 |
| 10 | 78909805 |
| 11 | 268421215 |
| 12 | 886226507 |
| 13 | 2849922043 |
| 14 | 8952215067 |
| 15 | 27534649147 |
| 16 | 83092274171 |
| 17 | 246448262139 |
| 18 | 719487237115 |
| 19 | 2070217930747 |
| 20 | 5877572837371 |
| 21 | 16481768407035 |
| 22 | 45689773670395 |
| 23 | 125310468063227 |
| 24 | 340264608595963 |
| 25 | 915344114450427 |
| 26 | 2440847110832123 |
[64,559,3558,19030,90398,393133,1595475,6121871, 22418665,78909805,268421215,886226507,2849922043, 8952215067,27534649147,83092274171,246448262139, 719487237115,2070217930747,5877572837371, 16481768407035,45689773670395,125310468063227, 340264608595963,915344114450427,2440847110832123] |