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| n | a(n) |
|---|---|
| 2 | 4 |
| 3 | 10 |
| 4 | 32 |
| 5 | 20 |
| 6 | 82 |
| 7 | 276 |
| 8 | 36 |
| 9 | 198 |
| 10 | 898 |
| 11 | 4028 |
| 12 | 62 |
| 13 | 456 |
| 14 | 2770 |
| 15 | 16840 |
| 16 | 93664 |
| 17 | 104 |
| 18 | 1014 |
| 19 | 8098 |
| 20 | 65998 |
| 21 | 483974 |
| 22 | 3248120 |
| 23 | 172 |
| 24 | 2210 |
| 25 | 22886 |
| 26 | 250152 |
| 27 | 2430726 |
| 28 | 21169866 |
| 29 | 177690360 |
| 30 | 282 |
| 31 | 4758 |
| 32 | 63366 |
| 33 | 931076 |
| 34 | 12062348 |
| 35 | 136925026 |
| 36 | 1482885382 |
| 37 | 15972807764 |
[4,10,32,20,82,276,36,198,898,4028,62,456,2770, 16840,93664,104,1014,8098,65998,483974,3248120, 172,2210,22886,250152,2430726,21169866,177690360, 282,4758,63366,931076,12062348,136925026, 1482885382,15972807764] |