| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 4 |
| 5 | 8 |
| 6 | 16 |
| 7 | 28 |
| 8 | 49 |
| 9 | 84 |
| 10 | 144 |
| 11 | 252 |
| 12 | 441 |
| 13 | 777 |
| 14 | 1369 |
| 15 | 2405 |
| 16 | 4225 |
| 17 | 7410 |
| 18 | 12996 |
| 19 | 22800 |
| 20 | 40000 |
| 21 | 70200 |
| 22 | 123201 |
| 23 | 216216 |
| 24 | 379456 |
| 25 | 665896 |
| 26 | 1168561 |
| 27 | 2050657 |
| 28 | 3598609 |
| 29 | 6315113 |
| 30 | 11082241 |
| 31 | 19448018 |
| 32 | 34128964 |
| 33 | 59892184 |
| 34 | 105103504 |
| 35 | 184443732 |
| 36 | 323676081 |
| 37 | 568011852 |
[1,1,2,4,8,16,28,49,84,144,252,441,777,1369,2405, 4225,7410,12996,22800,40000,70200,123201,216216, 379456,665896,1168561,2050657,3598609,6315113, 11082241,19448018,34128964,59892184,105103504, 184443732,323676081,568011852] |
