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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 4 |
| 3 | 14 |
| 4 | 49 |
| 5 | 86 |
| 6 | 301 |
| 7 | 1849 |
| 8 | 454 |
| 9 | 1589 |
| 10 | 9761 |
| 11 | 51529 |
| 12 | 886 |
| 13 | 3101 |
| 14 | 19049 |
| 15 | 100561 |
| 16 | 196249 |
| 17 | 3986 |
| 18 | 13951 |
| 19 | 85699 |
| 20 | 452411 |
| 21 | 882899 |
| 22 | 3972049 |
| 23 | 31754 |
| 24 | 111139 |
| 25 | 682711 |
| 26 | 3604079 |
| 27 | 7033511 |
| 28 | 31642861 |
| 29 | 252079129 |
| 30 | 6418 |
| 31 | 22463 |
| 32 | 137987 |
| 33 | 728443 |
| 34 | 1421587 |
| 35 | 6395537 |
| 36 | 50949293 |
| 37 | 10297681 |
[1,4,14,49,86,301,1849,454,1589,9761,51529,886, 3101,19049,100561,196249,3986,13951,85699,452411, 882899,3972049,31754,111139,682711,3604079, 7033511,31642861,252079129,6418,22463,137987, 728443,1421587,6395537,50949293,10297681] |