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A234633 as a simple table

na(n)
16
2240
337584
415095808
512420864000
618233911296000
743492335022080000
8157551157218115584000
9823642573772373884928000
105970637844437187690496000000
1158120324656942369834270720000000
12739968068159742816891489484800000000

[6,240,37584,15095808,12420864000,18233911296000,
 43492335022080000,157551157218115584000,
 823642573772373884928000,
 5970637844437187690496000000,
 58120324656942369834270720000000,
 739968068159742816891489484800000000]