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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 10 |
| 2 | 31 |
| 3 | 69 |
| 4 | 130 |
| 5 | 220 |
| 6 | 345 |
| 7 | 511 |
| 8 | 724 |
| 9 | 990 |
| 10 | 1315 |
| 11 | 1705 |
| 12 | 2166 |
| 13 | 2704 |
| 14 | 3325 |
| 15 | 4035 |
| 16 | 4840 |
| 17 | 5746 |
| 18 | 6759 |
| 19 | 7885 |
| 20 | 9130 |
| 21 | 10500 |
| 22 | 12001 |
| 23 | 13639 |
| 24 | 15420 |
| 25 | 17350 |
| 26 | 19435 |
| 27 | 21681 |
| 28 | 24094 |
| 29 | 26680 |
| 30 | 29445 |
| 31 | 32395 |
| 32 | 35536 |
| 33 | 38874 |
| 34 | 42415 |
| 35 | 46165 |
| 36 | 50130 |
| 37 | 54316 |
| 38 | 58729 |
| 39 | 63375 |
[0,10,31,69,130,220,345,511,724,990,1315,1705, 2166,2704,3325,4035,4840,5746,6759,7885,9130, 10500,12001,13639,15420,17350,19435,21681,24094, 26680,29445,32395,35536,38874,42415,46165,50130, 54316,58729,63375] |