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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 5 |
| 3 | 8 |
| 4 | 13 |
| 5 | 26 |
| 6 | 53 |
| 7 | 112 |
| 8 | 197 |
| 9 | 302 |
| 10 | 465 |
| 11 | 688 |
| 12 | 1013 |
| 13 | 1406 |
| 14 | 1995 |
| 15 | 2790 |
| 16 | 3759 |
| 17 | 4990 |
| 18 | 6419 |
| 19 | 8132 |
| 20 | 10281 |
| 21 | 13134 |
| 22 | 16521 |
| 23 | 20352 |
| 24 | 24767 |
| 25 | 30018 |
| 26 | 36095 |
| 27 | 43022 |
| 28 | 51469 |
| 29 | 60976 |
| 30 | 71993 |
| 31 | 84356 |
| 32 | 98137 |
| 33 | 113366 |
| 34 | 130095 |
| 35 | 150630 |
| 36 | 173315 |
| 37 | 198134 |
| 38 | 225225 |
| 39 | 254604 |
| 40 | 287725 |
[2,5,8,13,26,53,112,197,302,465,688,1013,1406, 1995,2790,3759,4990,6419,8132,10281,13134,16521, 20352,24767,30018,36095,43022,51469,60976,71993, 84356,98137,113366,130095,150630,173315,198134, 225225,254604,287725] |