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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 10 |
| 4 | 36 |
| 5 | 45 |
| 6 | 153 |
| 7 | 171 |
| 8 | 351 |
| 9 | 630 |
| 10 | 1035 |
| 11 | 1431 |
| 12 | 2016 |
| 13 | 3240 |
| 14 | 3321 |
| 15 | 4005 |
| 16 | 8001 |
| 17 | 10440 |
| 18 | 13041 |
| 19 | 13203 |
| 20 | 16110 |
| 21 | 21321 |
| 22 | 23220 |
| 23 | 25200 |
| 24 | 67896 |
| 25 | 89676 |
| 26 | 101025 |
| 27 | 105111 |
| 28 | 114003 |
| 29 | 186966 |
| 30 | 187578 |
| 31 | 198765 |
| 32 | 222111 |
| 33 | 239778 |
| 34 | 279378 |
| 35 | 292995 |
| 36 | 299925 |
| 37 | 320400 |
| 38 | 321201 |
[0,1,10,36,45,153,171,351,630,1035,1431,2016,3240, 3321,4005,8001,10440,13041,13203,16110,21321, 23220,25200,67896,89676,101025,105111,114003, 186966,187578,198765,222111,239778,279378,292995, 299925,320400,321201] |