Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 18.
A031516
Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 18.
Terms
- a(0) =326a(1) =334a(2) =354a(3) =358a(4) =374a(5) =382a(6) =386a(7) =398a(8) =732a(9) =741a(10) =753a(11) =789a(12) =804a(13) =813a(14) =831a(15) =849a(16) =897a(17) =1300a(18) =1324a(19) =1340a(20) =1348a(21) =1356a(22) =1372a(23) =1388a(24) =1396a(25) =1412a(26) =1436a(27) =1452a(28) =1460a(29) =1468
External references
- oeis: A031516