a(n) = ((4+3*sqrt(2))*(5+sqrt(2))^n + (4-3*sqrt(2))*(5-sqrt(2))^n)/4.
A164035
a(n) = ((4+3*sqrt(2))*(5+sqrt(2))^n + (4-3*sqrt(2))*(5-sqrt(2))^n)/4.
Terms
- a(0) =2a(1) =13a(2) =84a(3) =541a(4) =3478a(5) =22337a(6) =143376a(7) =920009a(8) =5902442a(9) =37864213a(10) =242885964a(11) =1557982741a(12) =9993450238a(13) =64100899337a(14) =411159637896
External references
- oeis: A164035