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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 16 |
| 2 | 1692 |
| 3 | 471456 |
| 4 | 248954740 |
| 5 | 211762028976 |
| 6 | 263602136467152 |
| 7 | 450793834408701952 |
| 8 | 1012717008332245086480 |
| 9 | 2890413726695794368777600 |
| 10 | 10212281910646409194031226752 |
| 11 | 43748238038977256648651851984896 |
| 12 | 223402441704169342933506999842426304 |
| 13 | 1340718887279590068185812449175232353024 |
[1,16,1692,471456,248954740,211762028976, 263602136467152,450793834408701952, 1012717008332245086480,2890413726695794368777600, 10212281910646409194031226752, 43748238038977256648651851984896, 223402441704169342933506999842426304, 1340718887279590068185812449175232353024] |