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| n | a(n) |
|---|---|
| 12 | 1 |
| 13 | 1 |
| 14 | 8 |
| 15 | 45 |
| 16 | 229 |
| 17 | 1043 |
| 18 | 4474 |
| 19 | 18034 |
| 20 | 69698 |
| 21 | 259516 |
| 22 | 938342 |
| 23 | 3308793 |
| 24 | 11427018 |
| 25 | 38763095 |
| 26 | 129499981 |
| 27 | 426937452 |
| 28 | 1391429896 |
| 29 | 4489322347 |
| 30 | 14356694844 |
| 31 | 45554354359 |
| 32 | 143546523999 |
| 33 | 449545164857 |
| 34 | 1400098598183 |
| 35 | 4339078154900 |
| 36 | 13387747332571 |
| 37 | 41141433154653 |
[1,1,8,45,229,1043,4474,18034,69698,259516,938342, 3308793,11427018,38763095,129499981,426937452, 1391429896,4489322347,14356694844,45554354359, 143546523999,449545164857,1400098598183, 4339078154900,13387747332571,41141433154653] |