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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 1 |
| 4 | 3 |
| 5 | 7 |
| 6 | 17 |
| 7 | 43 |
| 8 | 105 |
| 9 | 262 |
| 10 | 643 |
| 11 | 1590 |
| 12 | 3911 |
| 13 | 9643 |
| 14 | 23743 |
| 15 | 58502 |
| 16 | 144099 |
| 17 | 355009 |
| 18 | 874545 |
| 19 | 2154505 |
| 20 | 5307663 |
| 21 | 13075683 |
| 22 | 32212375 |
| 23 | 79356454 |
| 24 | 195497421 |
| 25 | 481615082 |
| 26 | 1186475969 |
| 27 | 2922926441 |
| 28 | 7200734309 |
| 29 | 17739268544 |
| 30 | 43701326725 |
| 31 | 107659793177 |
| 32 | 265223778927 |
[0,1,1,3,7,17,43,105,262,643,1590,3911,9643,23743, 58502,144099,355009,874545,2154505,5307663, 13075683,32212375,79356454,195497421,481615082, 1186475969,2922926441,7200734309,17739268544, 43701326725,107659793177,265223778927] |