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| n | a(n) |
|---|---|
| 1 | 242 |
| 2 | 900 |
| 3 | 3036 |
| 4 | 10201 |
| 5 | 30870 |
| 6 | 94249 |
| 7 | 271350 |
| 8 | 786769 |
| 9 | 2190720 |
| 10 | 6135529 |
| 11 | 16733464 |
| 12 | 45832900 |
| 13 | 123292328 |
| 14 | 332697600 |
| 15 | 886883128 |
| 16 | 2369450329 |
| 17 | 6278170990 |
| 18 | 16660871929 |
| 19 | 43967201252 |
| 20 | 116153500969 |
| 21 | 305698600640 |
| 22 | 805156263025 |
[242,900,3036,10201,30870,94249,271350,786769, 2190720,6135529,16733464,45832900,123292328, 332697600,886883128,2369450329,6278170990, 16660871929,43967201252,116153500969,305698600640, 805156263025] |