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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 4 |
| 3 | 6 |
| 4 | 10 |
| 5 | 12 |
| 6 | 18 |
| 7 | 22 |
| 8 | 36 |
| 9 | 42 |
| 10 | 52 |
| 11 | 58 |
| 12 | 70 |
| 13 | 100 |
| 14 | 102 |
| 15 | 108 |
| 16 | 130 |
| 17 | 138 |
| 18 | 148 |
| 19 | 150 |
| 20 | 172 |
| 21 | 178 |
| 22 | 196 |
| 23 | 198 |
| 24 | 228 |
| 25 | 262 |
| 26 | 268 |
| 27 | 282 |
| 28 | 310 |
| 29 | 346 |
| 30 | 358 |
| 31 | 372 |
| 32 | 388 |
| 33 | 418 |
| 34 | 420 |
| 35 | 438 |
| 36 | 442 |
| 37 | 490 |
| 38 | 498 |
| 39 | 502 |
| 40 | 522 |
| 41 | 546 |
| 42 | 570 |
| 43 | 586 |
| 44 | 598 |
| 45 | 630 |
| 46 | 642 |
| 47 | 646 |
| 48 | 660 |
| 49 | 690 |
| 50 | 708 |
| 51 | 738 |
| 52 | 742 |
| 53 | 772 |
| 54 | 822 |
| 55 | 826 |
| 56 | 838 |
| 57 | 852 |
[2,4,6,10,12,18,22,36,42,52,58,70,100,102,108,130, 138,148,150,172,178,196,198,228,262,268,282,310, 346,358,372,388,418,420,438,442,490,498,502,522, 546,570,586,598,630,642,646,660,690,708,738,742, 772,822,826,838,852] |