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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 20 |
| 3 | 83 |
| 4 | 237 |
| 5 | 534 |
| 6 | 1054 |
| 7 | 1892 |
| 8 | 3114 |
| 9 | 4880 |
| 10 | 7327 |
| 11 | 10530 |
| 12 | 14730 |
| 13 | 20066 |
| 14 | 26689 |
| 15 | 34882 |
| 16 | 44902 |
| 17 | 56850 |
| 18 | 70946 |
| 19 | 87644 |
| 20 | 106986 |
| 21 | 129470 |
| 22 | 155457 |
| 23 | 184920 |
| 24 | 218596 |
| 25 | 256675 |
| 26 | 299292 |
| 27 | 347261 |
| 28 | 400590 |
| 29 | 459615 |
| 30 | 525217 |
| 31 | 597887 |
| 32 | 677507 |
| 33 | 764657 |
| 34 | 860340 |
| 35 | 964291 |
| 36 | 1077693 |
| 37 | 1201321 |
[2,20,83,237,534,1054,1892,3114,4880,7327,10530, 14730,20066,26689,34882,44902,56850,70946,87644, 106986,129470,155457,184920,218596,256675,299292, 347261,400590,459615,525217,597887,677507,764657, 860340,964291,1077693,1201321] |