a(n+3) = 5*a(n+2) - 2*a(n+1) - 8*a(n), a(0) = 1, a(1) = 5, a(2) = 15.

A110614

a(n+3) = 5*a(n+2) - 2*a(n+1) - 8*a(n), a(0) = 1, a(1) = 5, a(2) = 15.

Terms

    a(0) =1a(1) =5a(2) =15a(3) =57a(4) =215a(5) =841a(6) =3319a(7) =13193a(8) =52599a(9) =210057a(10) =839543a(11) =3356809a(12) =13424503a(13) =53692553a(14) =214759287a(15) =859015305a(16) =3436017527a(17) =13743982729a(18) =54975756151a(19) =219902675081a(20) =879610001271

External references