a(n) = 8*a(n-1) - 2*a(n-2), with a(0)=0, a(1)=1.
A190975
a(n) = 8*a(n-1) - 2*a(n-2), with a(0)=0, a(1)=1.
Terms
- a(0) =0a(1) =1a(2) =8a(3) =62a(4) =480a(5) =3716a(6) =28768a(7) =222712a(8) =1724160a(9) =13347856a(10) =103334528a(11) =799980512a(12) =6193175040a(13) =47945439296a(14) =371177164288
External references
- oeis: A190975