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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 4 |
| 3 | 6 |
| 4 | 10 |
| 5 | 12 |
| 6 | 16 |
| 7 | 18 |
| 8 | 22 |
| 9 | 30 |
| 10 | 42 |
| 11 | 60 |
| 12 | 78 |
| 13 | 100 |
| 14 | 126 |
| 15 | 166 |
| 16 | 190 |
| 17 | 198 |
| 18 | 312 |
| 19 | 346 |
| 20 | 700 |
| 21 | 1708 |
| 22 | 2616 |
| 23 | 3538 |
| 24 | 5806 |
| 25 | 10500 |
| 26 | 10690 |
| 27 | 11278 |
| 28 | 12390 |
| 29 | 14478 |
| 30 | 42736 |
| 31 | 83338 |
| 32 | 95368 |
| 33 | 117238 |
| 34 | 127030 |
| 35 | 138936 |
| 36 | 141078 |
| 37 | 267016 |
| 38 | 269986 |
| 39 | 374320 |
| 40 | 986190 |
| 41 | 4031398 |
[2,4,6,10,12,16,18,22,30,42,60,78,100,126,166,190, 198,312,346,700,1708,2616,3538,5806,10500,10690, 11278,12390,14478,42736,83338,95368,117238,127030, 138936,141078,267016,269986,374320,986190,4031398] |