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| n | a(n) |
|---|---|
| 1 | 13 |
| 2 | 14 |
| 3 | 26 |
| 4 | 45 |
| 5 | 99 |
| 6 | 254 |
| 7 | 696 |
| 8 | 2013 |
| 9 | 5953 |
| 10 | 17878 |
| 11 | 54126 |
| 12 | 164525 |
| 13 | 501455 |
| 14 | 1530694 |
| 15 | 4676360 |
| 16 | 14293737 |
| 17 | 43703389 |
| 18 | 133647942 |
| 19 | 408746766 |
| 20 | 1250182369 |
| 21 | 3823920719 |
| 22 | 11696450282 |
| 23 | 35777089740 |
| 24 | 109435800649 |
| 25 | 334746407201 |
| 26 | 1023938030574 |
[13,14,26,45,99,254,696,2013,5953,17878,54126, 164525,501455,1530694,4676360,14293737,43703389, 133647942,408746766,1250182369,3823920719, 11696450282,35777089740,109435800649,334746407201, 1023938030574] |