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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 3 |
| 3 | 7 |
| 4 | 16 |
| 5 | 28 |
| 6 | 59 |
| 7 | 91 |
| 8 | 170 |
| 9 | 269 |
| 10 | 450 |
| 11 | 655 |
| 12 | 1162 |
| 13 | 1602 |
| 14 | 2527 |
| 15 | 3793 |
| 16 | 5805 |
| 17 | 8034 |
| 18 | 12660 |
| 19 | 17131 |
| 20 | 26484 |
| 21 | 37384 |
| 22 | 53738 |
| 23 | 73504 |
| 24 | 114683 |
| 25 | 153613 |
| 26 | 221225 |
| 27 | 313339 |
| 28 | 453769 |
| 29 | 609179 |
| 30 | 927968 |
| 31 | 1223909 |
| 32 | 1804710 |
| 33 | 2522264 |
| 34 | 3539835 |
| 35 | 4855420 |
| 36 | 7439870 |
| 37 | 9765555 |
| 38 | 14009545 |
[0,1,3,7,16,28,59,91,170,269,450,655,1162,1602, 2527,3793,5805,8034,12660,17131,26484,37384,53738, 73504,114683,153613,221225,313339,453769,609179, 927968,1223909,1804710,2522264,3539835,4855420, 7439870,9765555,14009545] |