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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 6 |
| 3 | 8 |
| 4 | 16 |
| 5 | 26 |
| 6 | 46 |
| 7 | 72 |
| 8 | 116 |
| 9 | 184 |
| 10 | 288 |
| 11 | 434 |
| 12 | 646 |
| 13 | 980 |
| 14 | 1444 |
| 15 | 2122 |
| 16 | 3066 |
| 17 | 4500 |
| 18 | 6452 |
| 19 | 9362 |
| 20 | 13294 |
| 21 | 19256 |
| 22 | 27280 |
| 23 | 39242 |
| 24 | 55306 |
| 25 | 79546 |
| 26 | 111990 |
| 27 | 160514 |
| 28 | 225466 |
| 29 | 323108 |
| 30 | 453520 |
| 31 | 648970 |
| 32 | 909942 |
| 33 | 1301932 |
| 34 | 1825044 |
| 35 | 2609142 |
| 36 | 3655406 |
| 37 | 5225912 |
| 38 | 7320748 |
| 39 | 10461942 |
| 40 | 14651858 |
[2,6,8,16,26,46,72,116,184,288,434,646,980,1444, 2122,3066,4500,6452,9362,13294,19256,27280,39242, 55306,79546,111990,160514,225466,323108,453520, 648970,909942,1301932,1825044,2609142,3655406, 5225912,7320748,10461942,14651858] |