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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 7 |
| 3 | 16 |
| 4 | 38 |
| 5 | 95 |
| 6 | 248 |
| 7 | 668 |
| 8 | 1838 |
| 9 | 5131 |
| 10 | 14470 |
| 11 | 41112 |
| 12 | 117475 |
| 13 | 337203 |
| 14 | 971515 |
| 15 | 2807744 |
| 16 | 8136090 |
| 17 | 23630215 |
| 18 | 68768210 |
| 19 | 200481036 |
| 20 | 585381973 |
| 21 | 1711647959 |
| 22 | 5011157073 |
| 23 | 14687848012 |
| 24 | 43095321203 |
| 25 | 126565380735 |
| 26 | 372030471493 |
| 27 | 1094437253428 |
| 28 | 3221999290418 |
| 29 | 9492019319771 |
| 30 | 27981390048004 |
[1,3,7,16,38,95,248,668,1838,5131,14470,41112, 117475,337203,971515,2807744,8136090,23630215, 68768210,200481036,585381973,1711647959, 5011157073,14687848012,43095321203,126565380735, 372030471493,1094437253428,3221999290418, 9492019319771,27981390048004] |