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 5.
A031418
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 5.
Terms
- a(0) =73a(1) =373a(2) =449a(3) =565a(4) =610a(5) =757a(6) =1021a(7) =1145a(8) =1193a(9) =1594a(10) =1669a(11) =1906a(12) =2053a(13) =2074a(14) =2138a(15) =2314a(16) =2477a(17) =2593a(18) =2861a(19) =3065a(20) =3145a(21) =4129a(22) =4346a(23) =4373a(24) =4469a(25) =4498a(26) =4721a(27) =5018a(28) =5114a(29) =5386
External references
- oeis: A031418