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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 | 1 |
| 2 | 4 |
| 3 | 9 |
| 4 | 32 |
| 5 | 101 |
| 6 | 347 |
| 7 | 1243 |
| 8 | 4498 |
| 9 | 16617 |
| 10 | 63167 |
| 11 | 240235 |
| 12 | 931568 |
| 13 | 3647803 |
| 14 | 14370312 |
| 15 | 57180711 |
| 16 | 229115778 |
| 17 | 922313297 |
| 18 | 3737973883 |
| 19 | 15221602137 |
| 20 | 62225061536 |
| 21 | 255556165925 |
| 22 | 1053396408250 |
| 23 | 4355324548631 |
| 24 | 18069755065816 |
| 25 | 75182656479519 |
| 26 | 313582517369107 |
| 27 | 1311433840151317 |
| 28 | 5497064374143140 |
[1,1,4,9,32,101,347,1243,4498,16617,63167,240235, 931568,3647803,14370312,57180711,229115778, 922313297,3737973883,15221602137,62225061536, 255556165925,1053396408250,4355324548631, 18069755065816,75182656479519,313582517369107, 1311433840151317,5497064374143140] |