a(n) is the number m such that f(sqrt(n)) is in the field Q(sqrt(m)), where f(x) is defined from the continued fraction x = [c(0), c(1), ... ] as [1/c(0), 1/c(1), ...].
A229956
a(n) is the number m such that f(sqrt(n)) is in the field Q(sqrt(m)), where f(x) is defined from the continued fraction x = [c(0), c(1), ... ] as [1/c(0), 1/c(1), ...].
Terms
- a(0) =1a(1) =17a(2) =1a(3) =1a(4) =65a(5) =33a(6) =33a(7) =17a(8) =1a(9) =145a(10) =73a(11) =1a(12) =73a(13) =1105a(14) =1a(15) =1a(16) =257a(17) =129a(18) =24465a(19) =65a(20) =129a(21) =97a(22) =2737a(23) =33a(24) =1a(25) =401a(26) =201a(27) =57889a(28) =353a(29) =1
External references
- oeis: A229956