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| n | a(n) |
|---|---|
| 1 | 148 |
| 2 | 4102 |
| 3 | 52591 |
| 4 | 422488 |
| 5 | 2469182 |
| 6 | 11444292 |
| 7 | 44435746 |
| 8 | 150015321 |
| 9 | 452158538 |
| 10 | 1240740774 |
| 11 | 3145970477 |
| 12 | 7456438392 |
| 13 | 16672410340 |
| 14 | 35430409240 |
| 15 | 71995370532 |
| 16 | 140596619273 |
| 17 | 264988109400 |
| 18 | 483746928198 |
| 19 | 857992826459 |
| 20 | 1482422036736 |
[148,4102,52591,422488,2469182,11444292,44435746, 150015321,452158538,1240740774,3145970477, 7456438392,16672410340,35430409240,71995370532, 140596619273,264988109400,483746928198, 857992826459,1482422036736] |