Numbers k at which the ratio (number of squares in the multiplicative group modulo k)/k reaches a new minimum.

A294342

Numbers k at which the ratio (number of squares in the multiplicative group modulo k)/k reaches a new minimum.

Terms

    a(0) =1a(1) =2a(2) =3a(3) =4a(4) =6a(5) =8a(6) =12a(7) =24a(8) =60a(9) =120a(10) =420a(11) =840a(12) =4620a(13) =9240a(14) =60060a(15) =120120a(16) =1021020a(17) =2042040a(18) =19399380a(19) =38798760a(20) =446185740a(21) =892371480

External references