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| n | a(n) |
|---|---|
| 1 | 13 |
| 2 | 22 |
| 3 | 38 |
| 4 | 66 |
| 5 | 116 |
| 6 | 205 |
| 7 | 364 |
| 8 | 648 |
| 9 | 1156 |
| 10 | 2065 |
| 11 | 3692 |
| 12 | 6605 |
| 13 | 11821 |
| 14 | 21162 |
| 15 | 37891 |
| 16 | 67853 |
| 17 | 121517 |
| 18 | 217635 |
| 19 | 389795 |
| 20 | 698159 |
| 21 | 1250488 |
| 22 | 2239801 |
| 23 | 4011830 |
| 24 | 7185843 |
| 25 | 12871061 |
| 26 | 23054299 |
| 27 | 41294302 |
| 28 | 73965426 |
| 29 | 132485296 |
| 30 | 237304945 |
| 31 | 425055875 |
| 32 | 761351738 |
[13,22,38,66,116,205,364,648,1156,2065,3692,6605, 11821,21162,37891,67853,121517,217635,389795, 698159,1250488,2239801,4011830,7185843,12871061, 23054299,41294302,73965426,132485296,237304945, 425055875,761351738] |