Numbers m such that there exists at least one integer k < m such that m^2+1 and k^2+1 have the same prime factors.
A282092
Numbers m such that there exists at least one integer k < m such that m^2+1 and k^2+1 have the same prime factors.
Terms
- a(0) =7a(1) =18a(2) =117a(3) =239a(4) =378a(5) =843a(6) =2207a(7) =2943a(8) =4443a(9) =4662a(10) =6072a(11) =8307a(12) =8708a(13) =9872a(14) =31561a(15) =103682a(16) =271443a(17) =853932a(18) =1021693a(19) =3539232a(20) =3699356a(21) =6349657a(22) =6907607a(23) =7042807a(24) =7249325a(25) =9335094a(26) =12623932a(27) =12752043a(28) =12813848a(29) =22211431
External references
- oeis: A282092