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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 2 |
| 2 | 8 |
| 3 | 22 |
| 4 | 50 |
| 5 | 110 |
| 6 | 226 |
| 7 | 464 |
| 8 | 938 |
| 9 | 1888 |
| 10 | 3794 |
| 11 | 7598 |
| 12 | 15208 |
| 13 | 30438 |
| 14 | 60890 |
| 15 | 121792 |
| 16 | 243606 |
| 17 | 487238 |
| 18 | 974488 |
| 19 | 1948998 |
| 20 | 3898034 |
| 21 | 7796078 |
| 22 | 15592168 |
| 23 | 31184358 |
| 24 | 62368754 |
| 25 | 124737534 |
| 26 | 249475080 |
| 27 | 498950182 |
| 28 | 997900402 |
| 29 | 1995800846 |
| 30 | 3991601704 |
| 31 | 7983203430 |
| 32 | 15966406898 |
[0,2,8,22,50,110,226,464,938,1888,3794,7598,15208, 30438,60890,121792,243606,487238,974488,1948998, 3898034,7796078,15592168,31184358,62368754, 124737534,249475080,498950182,997900402, 1995800846,3991601704,7983203430,15966406898] |