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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 5 |
| 2 | 11 |
| 3 | 48 |
| 4 | 207 |
| 5 | 1016 |
| 6 | 5159 |
| 7 | 27337 |
| 8 | 148489 |
| 9 | 824232 |
| 10 | 4650657 |
| 11 | 26602827 |
| 12 | 153900879 |
| 13 | 898909266 |
| 14 | 5293577451 |
| 15 | 31395570786 |
| 16 | 187364023083 |
| 17 | 1124308178270 |
| 18 | 6779554362911 |
| 19 | 41059231942321 |
| 20 | 249646266800185 |
| 21 | 1523286825246798 |
[1,5,11,48,207,1016,5159,27337,148489,824232, 4650657,26602827,153900879,898909266,5293577451, 31395570786,187364023083,1124308178270, 6779554362911,41059231942321,249646266800185, 1523286825246798] |