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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 4 |
| 3 | 18 |
| 4 | 60 |
| 5 | 126 |
| 6 | 184 |
| 7 | 270 |
| 8 | 370 |
| 9 | 462 |
| 10 | 611 |
| 11 | 742 |
| 12 | 900 |
| 13 | 1072 |
| 14 | 1224 |
| 15 | 1501 |
| 16 | 1660 |
| 17 | 1869 |
| 18 | 2134 |
| 19 | 2448 |
| 20 | 2700 |
| 21 | 2938 |
| 22 | 3429 |
| 23 | 3668 |
| 24 | 4002 |
| 25 | 4650 |
| 26 | 5024 |
| 27 | 5379 |
| 28 | 5678 |
| 29 | 6055 |
| 30 | 6480 |
| 31 | 7296 |
| 32 | 7722 |
| 33 | 8440 |
| 34 | 9143 |
| 35 | 9804 |
| 36 | 10252 |
| 37 | 10800 |
| 38 | 11546 |
| 39 | 12336 |
| 40 | 12887 |
| 41 | 13500 |
| 42 | 14127 |
| 43 | 14664 |
[0,4,18,60,126,184,270,370,462,611,742,900,1072, 1224,1501,1660,1869,2134,2448,2700,2938,3429,3668, 4002,4650,5024,5379,5678,6055,6480,7296,7722,8440, 9143,9804,10252,10800,11546,12336,12887,13500, 14127,14664] |