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 3.
A031416
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 3.
Terms
- a(0) =89a(1) =149a(2) =193a(3) =218a(4) =250a(5) =277a(6) =337a(7) =493a(8) =521a(9) =569a(10) =653a(11) =709a(12) =914a(13) =1009a(14) =1018a(15) =1037a(16) =1385a(17) =1465a(18) =1553a(19) =1597a(20) =1618a(21) =1754a(22) =1781a(23) =1898a(24) =1921a(25) =1973a(26) =1994a(27) =2069a(28) =2129a(29) =2146
External references
- oeis: A031416