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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 0 |
| 3 | 2 |
| 4 | 3 |
| 5 | 5 |
| 6 | 10 |
| 7 | 18 |
| 8 | 33 |
| 9 | 61 |
| 10 | 112 |
| 11 | 206 |
| 12 | 379 |
| 13 | 697 |
| 14 | 1282 |
| 15 | 2358 |
| 16 | 4337 |
| 17 | 7977 |
| 18 | 14672 |
| 19 | 26986 |
| 20 | 49635 |
| 21 | 91293 |
| 22 | 167914 |
| 23 | 308842 |
| 24 | 568049 |
| 25 | 1044805 |
| 26 | 1921696 |
| 27 | 3534550 |
| 28 | 6501051 |
| 29 | 11957297 |
| 30 | 21992898 |
| 31 | 40451246 |
| 32 | 74401441 |
| 33 | 136845585 |
| 34 | 251698272 |
| 35 | 462945298 |
| 36 | 851489155 |
[1,1,0,2,3,5,10,18,33,61,112,206,379,697,1282, 2358,4337,7977,14672,26986,49635,91293,167914, 308842,568049,1044805,1921696,3534550,6501051, 11957297,21992898,40451246,74401441,136845585, 251698272,462945298,851489155] |