Erdős-Nicolas numbers.

Terms

a(0) =24a(1) =2016a(2) =8190a(3) =42336a(4) =45864a(5) =392448a(6) =714240a(7) =1571328a(8) =61900800a(9) =91963648a(10) =211891200a(11) =1931236608a(12) =2013143040a(13) =4428914688a(14) =10200236032a(15) =214204956672