Minimal (positive) solution a(n) of Pell equation b(n)^2 - D(n)*a(n)^2 = +4 with D(n)= A077425(n). The companion sequence is a(n)=A077428(n).
A078355
Minimal (positive) solution a(n) of Pell equation b(n)^2 - D(n)*a(n)^2 = +4 with D(n)= A077425(n). The companion sequence is a(n)=A077428(n).
Terms
- a(0) =1a(1) =3a(2) =16a(3) =1a(4) =5a(5) =8a(6) =24a(7) =640a(8) =1a(9) =7a(10) =40a(11) =195a(12) =32a(13) =3a(14) =534000a(15) =1a(16) =9a(17) =106000a(18) =3a(19) =12754704a(20) =40a(21) =8a(22) =6525a(23) =226592a(24) =1a(25) =11a(26) =2968a(27) =15a(28) =1039424a(29) =16
External references
- oeis: A078355