a(n) = smallest positive number that occurs exactly n times as a difference between two positive squares.

A094191

a(n) = smallest positive number that occurs exactly n times as a difference between two positive squares.

Terms

    a(0) =3a(1) =15a(2) =45a(3) =96a(4) =192a(5) =240a(6) =576a(7) =480a(8) =720a(9) =960a(10) =12288a(11) =1440a(12) =3600a(13) =3840a(14) =2880a(15) =3360a(16) =20736a(17) =5040a(18) =147456a(19) =6720a(20) =11520a(21) =14400a(22) =50331648a(23) =10080a(24) =25920a(25) =245760a(26) =25200a(27) =26880a(28) =3221225472a(29) =20160

External references