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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 3 |
| 4 | 8 |
| 5 | 30 |
| 6 | 78 |
| 7 | 189 |
| 8 | 320 |
| 9 | 684 |
| 10 | 1010 |
| 11 | 1815 |
| 12 | 2052 |
| 13 | 3978 |
| 14 | 4718 |
| 15 | 7665 |
| 16 | 8576 |
| 17 | 13464 |
| 18 | 12546 |
| 19 | 22059 |
| 20 | 23720 |
| 21 | 34230 |
| 22 | 36542 |
| 23 | 50853 |
| 24 | 47928 |
| 25 | 72900 |
| 26 | 76466 |
| 27 | 101439 |
| 28 | 105560 |
| 29 | 137634 |
| 30 | 115230 |
| 31 | 182745 |
| 32 | 188672 |
| 33 | 238128 |
| 34 | 245378 |
| 35 | 305235 |
| 36 | 294948 |
| 37 | 385614 |
| 38 | 395390 |
| 39 | 480909 |
| 40 | 491840 |
| 41 | 592860 |
| 42 | 544950 |
| 43 | 723303 |
| 44 | 737528 |
[0,1,3,8,30,78,189,320,684,1010,1815,2052,3978, 4718,7665,8576,13464,12546,22059,23720,34230, 36542,50853,47928,72900,76466,101439,105560, 137634,115230,182745,188672,238128,245378,305235, 294948,385614,395390,480909,491840,592860,544950, 723303,737528] |