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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 6 |
| 2 | 33 |
| 3 | 118 |
| 4 | 321 |
| 5 | 726 |
| 6 | 1441 |
| 7 | 2598 |
| 8 | 4353 |
| 9 | 6886 |
| 10 | 10401 |
| 11 | 15126 |
| 12 | 21313 |
| 13 | 29238 |
| 14 | 39201 |
| 15 | 51526 |
| 16 | 66561 |
| 17 | 84678 |
| 18 | 106273 |
| 19 | 131766 |
| 20 | 161601 |
| 21 | 196246 |
| 22 | 236193 |
| 23 | 281958 |
| 24 | 334081 |
| 25 | 393126 |
| 26 | 459681 |
| 27 | 534358 |
| 28 | 617793 |
| 29 | 710646 |
| 30 | 813601 |
| 31 | 927366 |
| 32 | 1052673 |
| 33 | 1190278 |
| 34 | 1340961 |
| 35 | 1505526 |
| 36 | 1684801 |
[1,6,33,118,321,726,1441,2598,4353,6886,10401, 15126,21313,29238,39201,51526,66561,84678,106273, 131766,161601,196246,236193,281958,334081,393126, 459681,534358,617793,710646,813601,927366,1052673, 1190278,1340961,1505526,1684801] |