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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 4 |
| 5 | 5 |
| 6 | 6 |
| 7 | 17 |
| 8 | 23 |
| 9 | 30 |
| 10 | 73 |
| 11 | 103 |
| 12 | 141 |
| 13 | 314 |
| 14 | 455 |
| 15 | 643 |
| 16 | 1350 |
| 17 | 1993 |
| 18 | 2881 |
| 19 | 5798 |
| 20 | 8679 |
| 21 | 12761 |
| 22 | 24872 |
| 23 | 37633 |
| 24 | 56070 |
| 25 | 106573 |
| 26 | 162643 |
| 27 | 244906 |
| 28 | 456169 |
| 29 | 701075 |
| 30 | 1064866 |
| 31 | 1950697 |
| 32 | 3015563 |
| 33 | 4613544 |
| 34 | 8334539 |
| 35 | 12948083 |
| 36 | 19930544 |
| 37 | 35582783 |
| 38 | 55513327 |
[0,1,1,1,4,5,6,17,23,30,73,103,141,314,455,643, 1350,1993,2881,5798,8679,12761,24872,37633,56070, 106573,162643,244906,456169,701075,1064866, 1950697,3015563,4613544,8334539,12948083,19930544, 35582783,55513327] |