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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 3 |
| 3 | 19 |
| 4 | 183 |
| 5 | 2451 |
| 6 | 44523 |
| 7 | 1003955 |
| 8 | 27132591 |
| 9 | 862477603 |
| 10 | 31585560483 |
| 11 | 1312509666051 |
| 12 | 61199375982759 |
| 13 | 3171627767105747 |
| 14 | 181223609188848411 |
| 15 | 11340823889035215187 |
| 16 | 772846532507982245727 |
| 17 | 57069311173494600701763 |
| 18 | 4546598329397176113578067 |
| 19 | 389300199395007408056468579 |
| 20 | 35704214147724534934522349655 |
| 21 | 3496767016630336049148287129971 |
| 22 | 364696725110047554147731853993291 |
[1,1,3,19,183,2451,44523,1003955,27132591, 862477603,31585560483,1312509666051, 61199375982759,3171627767105747, 181223609188848411,11340823889035215187, 772846532507982245727,57069311173494600701763, 4546598329397176113578067, 389300199395007408056468579, 35704214147724534934522349655, 3496767016630336049148287129971, 364696725110047554147731853993291] |