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A009232 as a simple table
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 12 |
| 3 | 112 |
| 4 | 1232 |
| 5 | 10112 |
| 6 | -187968 |
| 7 | -17297408 |
| 8 | -743941888 |
| 9 | -15034114048 |
| 10 | 1067281001472 |
| 11 | 164133555208192 |
| 12 | 11143403147251712 |
| 13 | 55023491428646912 |
| 14 | -105243085074533203968 |
| 15 | -16342277967934744690688 |
[1,2,12,112,1232,10112,-187968,-17297408, -743941888,-15034114048,1067281001472, 164133555208192,11143403147251712, 55023491428646912,-105243085074533203968, -16342277967934744690688] |