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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 49 |
| 2 | 1274 |
| 3 | 23275 |
| 4 | 334425 |
| 5 | 4015011 |
| 6 | 41818315 |
| 7 | 387605443 |
| 8 | 3256150548 |
| 9 | 25135003348 |
| 10 | 180196297050 |
| 11 | 1210028211210 |
| 12 | 7663549175191 |
| 13 | 46039891115155 |
| 14 | 263630633610437 |
| 15 | 1444741006154614 |
| 16 | 7604013727493190 |
| 17 | 38554851707435000 |
| 18 | 188824087108333495 |
| 19 | 895363849845490543 |
| 20 | 4119191297378031000 |
| 21 | 18420594133878904635 |
| 22 | 80204828814019528689 |
[1,49,1274,23275,334425,4015011,41818315, 387605443,3256150548,25135003348,180196297050, 1210028211210,7663549175191,46039891115155, 263630633610437,1444741006154614,7604013727493190, 38554851707435000,188824087108333495, 895363849845490543,4119191297378031000, 18420594133878904635,80204828814019528689] |