a(n) = 6*a(n-1) - 5*a(n-2) - 4*a(n-3) - 3*a(n-4) + 2*a(n-5) + a(n-6), with a(0)=...=a(4)=0, a(5)=1.
A056015
a(n) = 6*a(n-1) - 5*a(n-2) - 4*a(n-3) - 3*a(n-4) + 2*a(n-5) + a(n-6), with a(0)=...=a(4)=0, a(5)=1.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =1a(6) =6a(7) =31a(8) =152a(9) =730a(10) =3480a(11) =16542a(12) =78544a(13) =372779a(14) =1768958a(15) =8393741a(16) =39827472a(17) =188975588a(18) =896658432a(19) =4254492236a(20) =20186832928a(21) =95783024581a(22) =454473817254
External references
- oeis: A056015