Minimal positive solution a(n) of Pell equation a(n)^2 - D(n)*b(n)^2 = +4 or -4 with D(n)=A077425(n). The companion sequence is b(n)=A077058(n).
A078361
Minimal positive solution a(n) of Pell equation a(n)^2 - D(n)*b(n)^2 = +4 or -4 with D(n)=A077425(n). The companion sequence is b(n)=A077058(n).
Terms
- a(0) =1a(1) =3a(2) =8a(3) =5a(4) =5a(5) =46a(6) =12a(7) =64a(8) =7a(9) =7a(10) =302a(11) =39a(12) =16a(13) =25a(14) =2136a(15) =9a(16) =9a(17) =1000a(18) =29a(19) =11208a(20) =20a(21) =82a(22) =261a(23) =1552a(24) =11a(25) =11a(26) =33710a(27) =173a(28) =3488a(29) =190
External references
- oeis: A078361