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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 5 |
| 3 | 65 |
| 4 | 325 |
| 5 | 1105 |
| 6 | 5525 |
| 7 | 27625 |
| 8 | 71825 |
| 9 | 138125 |
| 10 | 160225 |
| 11 | 801125 |
| 12 | 2082925 |
| 13 | 4005625 |
| 14 | 5928325 |
| 15 | 29641625 |
| 16 | 77068225 |
| 17 | 148208125 |
| 18 | 243061325 |
| 19 | 1215306625 |
| 20 | 3159797225 |
| 21 | 6076533125 |
| 22 | 12882250225 |
| 23 | 53716552825 |
| 24 | 64411251125 |
| 25 | 167469252925 |
| 26 | 322056255625 |
| 27 | 785817263725 |
[1,5,65,325,1105,5525,27625,71825,138125,160225, 801125,2082925,4005625,5928325,29641625,77068225, 148208125,243061325,1215306625,3159797225, 6076533125,12882250225,53716552825,64411251125, 167469252925,322056255625,785817263725] |