Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted then there are a pair of central terms both equal to 9.
A031422
Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted then there are a pair of central terms both equal to 9.
Terms
- a(0) =601a(1) =1073a(2) =1930a(3) =2017a(4) =2621a(5) =2825a(6) =3037a(7) =3533a(8) =3769a(9) =4013a(10) =4714a(11) =5701a(12) =6218a(13) =6373a(14) =6689a(15) =7013a(16) =7757a(17) =8461a(18) =8825a(19) =9197a(20) =9277a(21) =12629a(22) =13394a(23) =13621a(24) =14081a(25) =14549a(26) =15613a(27) =15754a(28) =18265a(29) =18797
External references
- oeis: A031422