a(n) = 7*a(n-1) - a(n-2) - 4 with a(1)=1, a(2)=3.
A206351
a(n) = 7*a(n-1) - a(n-2) - 4 with a(1)=1, a(2)=3.
Terms
- a(0) =1a(1) =3a(2) =16a(3) =105a(4) =715a(5) =4896a(6) =33553a(7) =229971a(8) =1576240a(9) =10803705a(10) =74049691a(11) =507544128a(12) =3478759201a(13) =23843770275a(14) =163427632720
External references
- oeis: A206351