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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 4 |
| 3 | 7 |
| 4 | 14 |
| 5 | 6 |
| 6 | 34 |
| 7 | 68 |
| 8 | 9 |
| 9 | 145 |
| 10 | 11 |
| 11 | 301 |
| 12 | 13 |
| 13 | 615 |
| 14 | 1230 |
| 15 | 16 |
| 16 | 2476 |
| 17 | 18 |
| 18 | 4970 |
| 19 | 20 |
| 20 | 9960 |
| 21 | 22 |
| 22 | 19942 |
| 23 | 24 |
| 24 | 39908 |
| 25 | 26 |
| 26 | 79842 |
| 27 | 28 |
| 28 | 159712 |
| 29 | 30 |
| 30 | 319454 |
| 31 | 32 |
| 32 | 638940 |
| 33 | 35 |
| 34 | 1277915 |
| 35 | 2555830 |
| 36 | 37 |
| 37 | 5111697 |
| 38 | 39 |
| 39 | 10223433 |
| 40 | 41 |
| 41 | 20446907 |
| 42 | 43 |
| 43 | 40893857 |
| 44 | 45 |
[3,4,7,14,6,34,68,9,145,11,301,13,615,1230,16, 2476,18,4970,20,9960,22,19942,24,39908,26,79842, 28,159712,30,319454,32,638940,35,1277915,2555830, 37,5111697,39,10223433,41,20446907,43,40893857,45] |