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| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 11 |
| 3 | 11 |
| 4 | 26 |
| 5 | 66 |
| 6 | 26 |
| 7 | 57 |
| 8 | 302 |
| 9 | 302 |
| 10 | 57 |
| 11 | 120 |
| 12 | 1191 |
| 13 | 2416 |
| 14 | 1191 |
| 15 | 120 |
| 16 | 247 |
| 17 | 4293 |
| 18 | 15619 |
| 19 | 15619 |
| 20 | 4293 |
| 21 | 247 |
| 22 | 502 |
| 23 | 14608 |
| 24 | 88234 |
| 25 | 156190 |
| 26 | 88234 |
| 27 | 14608 |
| 28 | 502 |
| 29 | 1013 |
| 30 | 47840 |
| 31 | 455192 |
| 32 | 1310354 |
| 33 | 1310354 |
| 34 | 455192 |
| 35 | 47840 |
| 36 | 1013 |
| 37 | 2036 |
| 38 | 152637 |
| 39 | 2203488 |
| 40 | 9738114 |
[4,11,11,26,66,26,57,302,302,57,120,1191,2416, 1191,120,247,4293,15619,15619,4293,247,502,14608, 88234,156190,88234,14608,502,1013,47840,455192, 1310354,1310354,455192,47840,1013,2036,152637, 2203488,9738114] |