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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 | 2 |
| 3 | 6 |
| 4 | 22 |
| 5 | 86 |
| 6 | 337 |
| 7 | 1295 |
| 8 | 4854 |
| 9 | 17760 |
| 10 | 63594 |
| 11 | 223488 |
| 12 | 772841 |
| 13 | 2635733 |
| 14 | 8882042 |
| 15 | 29622114 |
| 16 | 97901974 |
| 17 | 321016826 |
| 18 | 1045294921 |
| 19 | 3382803539 |
| 20 | 10887874254 |
| 21 | 34873641228 |
| 22 | 111215129370 |
| 23 | 353295398148 |
| 24 | 1118381630705 |
| 25 | 3529144183433 |
| 26 | 11104719198770 |
| 27 | 34851434248542 |
| 28 | 109121784244342 |
| 29 | 340934806542302 |
[1,1,2,6,22,86,337,1295,4854,17760,63594,223488, 772841,2635733,8882042,29622114,97901974, 321016826,1045294921,3382803539,10887874254, 34873641228,111215129370,353295398148, 1118381630705,3529144183433,11104719198770, 34851434248542,109121784244342,340934806542302] |