Numbers n such that the area of the parallelogram formed by the vectors (n, prime(n)) and (n+1, prime(n+1)) is an integer square, i.e., Det[{{n, prime(n)},{n+1, prime(n+1)}}] is an integer square.
A067805
Numbers n such that the area of the parallelogram formed by the vectors (n, prime(n)) and (n+1, prime(n+1)) is an integer square, i.e., Det[{{n, prime(n)},{n+1, prime(n+1)}}] is an integer square.
Terms
- a(0) =2a(1) =3a(2) =4a(3) =19a(4) =22a(5) =53a(6) =91a(7) =239a(8) =240a(9) =266a(10) =759a(11) =842a(12) =853a(13) =915a(14) =1000a(15) =1801a(16) =2016a(17) =2230a(18) =2724a(19) =2782a(20) =2908a(21) =2944a(22) =3323a(23) =3347a(24) =3938a(25) =3984a(26) =4027a(27) =4070a(28) =4529a(29) =5828
External references
- oeis: A067805