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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 6 |
| 5 | 9 |
| 6 | 15 |
| 7 | 21 |
| 8 | 31 |
| 9 | 45 |
| 10 | 63 |
| 11 | 87 |
| 12 | 123 |
| 13 | 165 |
| 14 | 224 |
| 15 | 302 |
| 16 | 401 |
| 17 | 528 |
| 18 | 698 |
| 19 | 906 |
| 20 | 1177 |
| 21 | 1520 |
| 22 | 1950 |
| 23 | 2488 |
| 24 | 3173 |
| 25 | 4010 |
| 26 | 5061 |
| 27 | 6363 |
| 28 | 7965 |
| 29 | 9932 |
| 30 | 12366 |
| 31 | 15317 |
| 32 | 18937 |
| 33 | 23342 |
| 34 | 28686 |
| 35 | 35153 |
| 36 | 43002 |
| 37 | 52425 |
| 38 | 63797 |
| 39 | 77454 |
| 40 | 93819 |
| 41 | 113386 |
| 42 | 136807 |
| 43 | 164663 |
| 44 | 197863 |
| 45 | 237302 |
| 46 | 284080 |
[1,1,2,4,6,9,15,21,31,45,63,87,123,165,224,302, 401,528,698,906,1177,1520,1950,2488,3173,4010, 5061,6363,7965,9932,12366,15317,18937,23342,28686, 35153,43002,52425,63797,77454,93819,113386,136807, 164663,197863,237302,284080] |