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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 6 |
| 5 | 14 |
| 6 | 26 |
| 7 | 50 |
| 8 | 104 |
| 9 | 184 |
| 10 | 342 |
| 11 | 674 |
| 12 | 1356 |
| 13 | 2788 |
| 14 | 5518 |
| 15 | 10826 |
| 16 | 21370 |
| 17 | 42026 |
| 18 | 83522 |
| 19 | 167026 |
| 20 | 332744 |
| 21 | 656000 |
| 22 | 1275546 |
| 23 | 2467078 |
| 24 | 4781642 |
| 25 | 9309626 |
| 26 | 18249534 |
| 27 | 36020326 |
| 28 | 71503892 |
| 29 | 142624604 |
| 30 | 285547086 |
| 31 | 573206970 |
| 32 | 1151765116 |
| 33 | 2311859564 |
| 34 | 4629326326 |
| 35 | 9244819530 |
| 36 | 18421964748 |
| 37 | 36659214484 |
[1,1,2,4,6,14,26,50,104,184,342,674,1356,2788, 5518,10826,21370,42026,83522,167026,332744,656000, 1275546,2467078,4781642,9309626,18249534,36020326, 71503892,142624604,285547086,573206970,1151765116, 2311859564,4629326326,9244819530,18421964748, 36659214484] |