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| n | a(n) |
|---|---|
| 2 | -1 |
| 3 | 69 |
| 4 | 140 |
| 5 | 210 |
| 6 | 280 |
| 7 | 350 |
| 8 | 420 |
| 9 | 488 |
| 10 | 560 |
| 11 | 628 |
| 12 | 700 |
| 13 | 770 |
| 14 | 840 |
| 15 | 906 |
| 16 | 980 |
| 17 | 1048 |
| 18 | 1120 |
| 19 | 1188 |
| 20 | 1260 |
| 21 | 1326 |
| 22 | 1400 |
| 23 | 1466 |
| 24 | 1540 |
| 25 | 1608 |
| 26 | 1680 |
| 27 | 1744 |
| 28 | 1820 |
| 29 | 1886 |
| 30 | 1960 |
| 31 | 2026 |
| 32 | 2100 |
| 33 | 2164 |
| 34 | 2240 |
| 35 | 2304 |
| 36 | 2380 |
| 37 | 2446 |
| 38 | 2520 |
| 39 | 2582 |
| 40 | 2660 |
| 41 | 2724 |
| 42 | 2800 |
| 43 | 2864 |
[-1,69,140,210,280,350,420,488,560,628,700,770, 840,906,980,1048,1120,1188,1260,1326,1400,1466, 1540,1608,1680,1744,1820,1886,1960,2026,2100,2164, 2240,2304,2380,2446,2520,2582,2660,2724,2800,2864] |