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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 5 |
| 3 | 11 |
| 4 | 26 |
| 5 | 58 |
| 6 | 134 |
| 7 | 303 |
| 8 | 693 |
| 9 | 1576 |
| 10 | 3593 |
| 11 | 8184 |
| 12 | 18645 |
| 13 | 42480 |
| 14 | 96773 |
| 15 | 220481 |
| 16 | 502290 |
| 17 | 1144350 |
| 18 | 2607062 |
| 19 | 5939501 |
| 20 | 13531493 |
| 21 | 30827806 |
| 22 | 70232669 |
| 23 | 160005808 |
| 24 | 364529269 |
| 25 | 830479602 |
| 26 | 1892019493 |
| 27 | 4310445875 |
| 28 | 9820165646 |
| 29 | 22372546322 |
| 30 | 50969693930 |
| 31 | 116120429167 |
[1,2,5,11,26,58,134,303,693,1576,3593,8184,18645, 42480,96773,220481,502290,1144350,2607062,5939501, 13531493,30827806,70232669,160005808,364529269, 830479602,1892019493,4310445875,9820165646, 22372546322,50969693930,116120429167] |