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| n | a(n) |
|---|---|
| 1 | 42 |
| 2 | 447 |
| 3 | 2740 |
| 4 | 9257 |
| 5 | 20358 |
| 6 | 56609 |
| 7 | 130548 |
| 8 | 282785 |
| 9 | 518428 |
| 10 | 942207 |
| 11 | 1551632 |
| 12 | 2647009 |
| 13 | 4275204 |
| 14 | 6319643 |
| 15 | 9579864 |
| 16 | 12169949 |
| 17 | 17537316 |
| 18 | 24230201 |
| 19 | 33579138 |
| 20 | 46141187 |
| 21 | 60471140 |
| 22 | 80074953 |
| 23 | 103034670 |
| 24 | 133258191 |
| 25 | 171772880 |
| 26 | 215614417 |
[42,447,2740,9257,20358,56609,130548,282785, 518428,942207,1551632,2647009,4275204,6319643, 9579864,12169949,17537316,24230201,33579138, 46141187,60471140,80074953,103034670,133258191, 171772880,215614417] |