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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 10 |
| 2 | 85 |
| 3 | 632 |
| 4 | 3423 |
| 5 | 14795 |
| 6 | 54219 |
| 7 | 174844 |
| 8 | 508484 |
| 9 | 1357051 |
| 10 | 3367166 |
| 11 | 7846507 |
| 12 | 17311702 |
| 13 | 36401032 |
| 14 | 73344164 |
| 15 | 142259423 |
| 16 | 266651159 |
| 17 | 484610624 |
| 18 | 856389171 |
| 19 | 1475218962 |
| 20 | 2482510921 |
| 21 | 4088870385 |
| 22 | 6602746625 |
| 23 | 10468982846 |
| 24 | 16320069070 |
| 25 | 25043533065 |
| 26 | 37869646820 |
[1,10,85,632,3423,14795,54219,174844,508484, 1357051,3367166,7846507,17311702,36401032, 73344164,142259423,266651159,484610624,856389171, 1475218962,2482510921,4088870385,6602746625, 10468982846,16320069070,25043533065,37869646820] |