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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 1 |
| 5 | 3 |
| 6 | 7 |
| 7 | 13 |
| 8 | 21 |
| 9 | 31 |
| 10 | 45 |
| 11 | 61 |
| 12 | 82 |
| 13 | 107 |
| 14 | 136 |
| 15 | 170 |
| 16 | 210 |
| 17 | 255 |
| 18 | 306 |
| 19 | 363 |
| 20 | 427 |
| 21 | 498 |
| 22 | 577 |
| 23 | 664 |
| 24 | 759 |
| 25 | 862 |
| 26 | 975 |
| 27 | 1096 |
| 28 | 1228 |
| 29 | 1370 |
| 30 | 1522 |
| 31 | 1685 |
| 32 | 1860 |
| 33 | 2046 |
| 34 | 2244 |
| 35 | 2454 |
| 36 | 2677 |
| 37 | 2913 |
| 38 | 3163 |
| 39 | 3427 |
| 40 | 3705 |
| 41 | 3997 |
| 42 | 4305 |
[0,0,0,0,1,3,7,13,21,31,45,61,82,107,136,170,210, 255,306,363,427,498,577,664,759,862,975,1096,1228, 1370,1522,1685,1860,2046,2244,2454,2677,2913,3163, 3427,3705,3997,4305] |