Odd composite integers m such that U(m)^2 == 1 (mod m) and V(m) == 4 (mod m), where U(m) and V(m) are the m-th generalized Lucas and Pell-Lucas numbers of parameters a=4 and b=-1, respectively.
A337627
Odd composite integers m such that U(m)^2 == 1 (mod m) and V(m) == 4 (mod m), where U(m) and V(m) are the m-th generalized Lucas and Pell-Lucas numbers of parameters a=4 and b=-1, respectively.
Terms
- a(0) =9a(1) =161a(2) =341a(3) =897a(4) =901a(5) =1281a(6) =1853a(7) =2737a(8) =4181a(9) =4209a(10) =4577a(11) =5473a(12) =5611a(13) =5777a(14) =6119a(15) =6721a(16) =9701a(17) =9729a(18) =10877a(19) =11041a(20) =12209a(21) =12349a(22) =13201a(23) =13481a(24) =14981a(25) =15251a(26) =16771a(27) =19669a(28) =20591a(29) =20769
External references
- oeis: A337627