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| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 6 |
| 3 | 12 |
| 4 | 18 |
| 5 | 30 |
| 6 | 42 |
| 7 | 60 |
| 8 | 72 |
| 9 | 108 |
| 10 | 150 |
| 11 | 180 |
| 12 | 192 |
| 13 | 198 |
| 14 | 228 |
| 15 | 240 |
| 16 | 270 |
| 17 | 312 |
| 18 | 348 |
| 19 | 420 |
| 20 | 432 |
| 21 | 462 |
| 22 | 522 |
| 23 | 570 |
| 24 | 600 |
| 25 | 660 |
| 26 | 810 |
| 27 | 828 |
| 28 | 858 |
| 29 | 882 |
| 30 | 1020 |
| 31 | 1032 |
| 32 | 1050 |
| 33 | 1092 |
| 34 | 1152 |
| 35 | 1230 |
| 36 | 1290 |
| 37 | 1302 |
| 38 | 1320 |
| 39 | 1428 |
| 40 | 1452 |
| 41 | 1482 |
| 42 | 1488 |
| 43 | 1620 |
| 44 | 1722 |
| 45 | 1872 |
| 46 | 1932 |
| 47 | 1950 |
| 48 | 1998 |
| 49 | 2028 |
| 50 | 2088 |
| 51 | 2112 |
| 52 | 2130 |
| 53 | 2142 |
| 54 | 2268 |
| 55 | 2310 |
| 56 | 2340 |
| 57 | 2550 |
| 58 | 2592 |
| 59 | 2688 |
| 60 | 2730 |
[4,6,12,18,30,42,60,72,108,150,180,192,198,228, 240,270,312,348,420,432,462,522,570,600,660,810, 828,858,882,1020,1032,1050,1092,1152,1230,1290, 1302,1320,1428,1452,1482,1488,1620,1722,1872,1932, 1950,1998,2028,2088,2112,2130,2142,2268,2310,2340, 2550,2592,2688,2730] |