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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 4 |
| 3 | 29 |
| 4 | 106 |
| 5 | 280 |
| 6 | 610 |
| 7 | 1169 |
| 8 | 2044 |
| 9 | 3336 |
| 10 | 5160 |
| 11 | 7645 |
| 12 | 10934 |
| 13 | 15184 |
| 14 | 20566 |
| 15 | 27265 |
| 16 | 35480 |
| 17 | 45424 |
| 18 | 57324 |
| 19 | 71421 |
| 20 | 87970 |
| 21 | 107240 |
| 22 | 129514 |
| 23 | 155089 |
| 24 | 184276 |
| 25 | 217400 |
| 26 | 254800 |
| 27 | 296829 |
| 28 | 343854 |
| 29 | 396256 |
| 30 | 454430 |
| 31 | 518785 |
| 32 | 589744 |
| 33 | 667744 |
| 34 | 753236 |
| 35 | 846685 |
| 36 | 948570 |
| 37 | 1059384 |
| 38 | 1179634 |
| 39 | 1309841 |
| 40 | 1450540 |
| 41 | 1602280 |
[0,0,4,29,106,280,610,1169,2044,3336,5160,7645, 10934,15184,20566,27265,35480,45424,57324,71421, 87970,107240,129514,155089,184276,217400,254800, 296829,343854,396256,454430,518785,589744,667744, 753236,846685,948570,1059384,1179634,1309841, 1450540,1602280] |