Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 13.
A031601
Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 13.
Terms
- a(0) =409a(1) =1181a(2) =2258a(3) =3562a(4) =3802a(5) =3925a(6) =5305a(7) =5897a(8) =8269a(9) =9829a(10) =10834a(11) =11041a(12) =12389a(13) =15737a(14) =16745a(15) =17785a(16) =21757a(17) =23029a(18) =23633a(19) =24554a(20) =25178a(21) =26869a(22) =27194a(23) =27521a(24) =28181a(25) =28514a(26) =28849a(27) =30554a(28) =30901a(29) =32413
External references
- oeis: A031601