| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 2 |
| 4 | 3 |
| 5 | 9 |
| 6 | 9 |
| 7 | 20 |
| 8 | 24 |
| 9 | 32 |
| 10 | 41 |
| 11 | 54 |
| 12 | 55 |
| 13 | 77 |
| 14 | 87 |
| 15 | 100 |
| 16 | 115 |
| 17 | 135 |
| 18 | 145 |
| 19 | 170 |
| 20 | 180 |
| 21 | 205 |
| 22 | 227 |
| 23 | 252 |
| 24 | 263 |
| 25 | 298 |
| 26 | 321 |
| 27 | 346 |
| 28 | 372 |
| 29 | 405 |
| 30 | 424 |
| 31 | 464 |
| 32 | 490 |
| 33 | 523 |
| 34 | 557 |
| 35 | 592 |
| 36 | 616 |
| 37 | 665 |
| 38 | 699 |
| 39 | 736 |
| 40 | 768 |
| 41 | 819 |
| 42 | 850 |
| 43 | 902 |
| 44 | 940 |
| 45 | 983 |
| 46 | 1031 |
| 47 | 1080 |
| 48 | 1113 |
| 49 | 1174 |
| 50 | 1219 |
[0,0,2,3,9,9,20,24,32,41,54,55,77,87,100,115,135, 145,170,180,205,227,252,263,298,321,346,372,405, 424,464,490,523,557,592,616,665,699,736,768,819, 850,902,940,983,1031,1080,1113,1174,1219] |