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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 | 9 |
| 3 | 252 |
| 4 | 316 |
| 5 | 3441 |
| 6 | 3657 |
| 7 | 20464 |
| 8 | 20976 |
| 9 | 80025 |
| 10 | 81025 |
| 11 | 242076 |
| 12 | 243804 |
| 13 | 615097 |
| 14 | 617841 |
| 15 | 1377216 |
| 16 | 1381312 |
| 17 | 2801169 |
| 18 | 2807001 |
| 19 | 5283100 |
| 20 | 5291100 |
| 21 | 9375201 |
| 22 | 9385849 |
| 23 | 15822192 |
| 24 | 15836016 |
| 25 | 25601641 |
| 26 | 25619217 |
| 27 | 39968124 |
| 28 | 39990076 |
| 29 | 60501225 |
[1,9,252,316,3441,3657,20464,20976,80025,81025, 242076,243804,615097,617841,1377216,1381312, 2801169,2807001,5283100,5291100,9375201,9385849, 15822192,15836016,25601641,25619217,39968124, 39990076,60501225] |