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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 1 |
| 5 | 1 |
| 6 | 1 |
| 7 | 1 |
| 8 | 2 |
| 9 | 3 |
| 10 | 4 |
| 11 | 6 |
| 12 | 8 |
| 13 | 11 |
| 14 | 15 |
| 15 | 21 |
| 16 | 30 |
| 17 | 42 |
| 18 | 59 |
| 19 | 82 |
| 20 | 114 |
| 21 | 159 |
| 22 | 222 |
| 23 | 311 |
| 24 | 435 |
| 25 | 608 |
| 26 | 849 |
| 27 | 1185 |
| 28 | 1655 |
| 29 | 2312 |
| 30 | 3231 |
| 31 | 4515 |
| 32 | 6308 |
| 33 | 8812 |
| 34 | 12309 |
| 35 | 17195 |
| 36 | 24022 |
| 37 | 33561 |
| 38 | 46888 |
| 39 | 65505 |
| 40 | 91512 |
| 41 | 127843 |
| 42 | 178599 |
| 43 | 249509 |
| 44 | 348575 |
| 45 | 486975 |
| 46 | 680323 |
| 47 | 950434 |
| 48 | 1327786 |
[0,0,0,1,1,1,1,2,3,4,6,8,11,15,21,30,42,59,82,114, 159,222,311,435,608,849,1185,1655,2312,3231,4515, 6308,8812,12309,17195,24022,33561,46888,65505, 91512,127843,178599,249509,348575,486975,680323, 950434,1327786] |