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1d
awarded  Excavator
1d
revised Exists a binary primitive pentanomial of degree $n$, for every $n\ge5$?
Replaced dead link to A132451
1d
suggested approved edit on Exists a binary primitive pentanomial of degree $n$, for every $n\ge5$?
1d
revised $n!+1$ being a perfect square
Replaced dead link to OEIS A025494
1d
awarded  Editor
1d
suggested approved edit on $n!+1$ being a perfect square
1d
revised $n!+1$ being a perfect square
Replaced dead link to A085692
1d
suggested approved edit on $n!+1$ being a perfect square
Apr
22
answered Backus-Naur Form with automata
Mar
25
awarded  Quorum
Dec
5
awarded  Supporter
Dec
3
awarded  Autobiographer