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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 6 |
| 2 | 15 |
| 3 | 39 |
| 4 | 60 |
| 5 | 132 |
| 6 | 177 |
| 7 | 289 |
| 8 | 382 |
| 9 | 606 |
| 10 | 723 |
| 11 | 1043 |
| 12 | 1216 |
| 13 | 1680 |
| 14 | 1885 |
| 15 | 2413 |
| 16 | 2706 |
| 17 | 3558 |
| 18 | 3783 |
| 19 | 4883 |
| 20 | 5028 |
| 21 | 6528 |
| 22 | 6897 |
| 23 | 8293 |
| 24 | 8902 |
| 25 | 10674 |
| 26 | 11271 |
| 27 | 13271 |
| 28 | 13932 |
| 29 | 16344 |
| 30 | 17133 |
| 31 | 19525 |
| 32 | 20558 |
| 33 | 23594 |
| 34 | 24439 |
| 35 | 28084 |
| 36 | 28769 |
| 37 | 32817 |
| 38 | 33974 |
| 39 | 38242 |
| 40 | 39427 |
| 41 | 44339 |
| 42 | 45584 |
[1,6,15,39,60,132,177,289,382,606,723,1043,1216, 1680,1885,2413,2706,3558,3783,4883,5028,6528,6897, 8293,8902,10674,11271,13271,13932,16344,17133, 19525,20558,23594,24439,28084,28769,32817,33974, 38242,39427,44339,45584] |