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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 4 |
| 2 | 32 |
| 3 | 340 |
| 4 | 4096 |
| 5 | 52704 |
| 6 | 705956 |
| 7 | 9717488 |
| 8 | 136443904 |
| 9 | 1945097296 |
| 10 | 28063032832 |
| 11 | 408836809088 |
| 12 | 6004266204964 |
| 13 | 88779091937488 |
| 14 | 1320294416004736 |
| 15 | 19733192546306640 |
| 16 | 296219343194357760 |
| 17 | 4463668854432401280 |
[1,4,32,340,4096,52704,705956,9717488,136443904, 1945097296,28063032832,408836809088,6004266204964, 88779091937488,1320294416004736,19733192546306640, 296219343194357760,4463668854432401280] |