a(n-1)*a(n-6) + a(n-2)*a(n-7) + a(n-3)*a(n-8) + a(n-4)*a(n-9), with a(k<8) = 1.

A118334

a(n-1)*a(n-6) + a(n-2)*a(n-7) + a(n-3)*a(n-8) + a(n-4)*a(n-9), with a(k<8) = 1.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =1a(8) =4a(9) =7a(10) =13a(11) =25a(12) =49a(13) =94a(14) =463a(15) =3691a(16) =51649a(17) =1342825a(18) =67140874a(19) =6378379789

External references