Number of 0..5 arrays of length n with each element unequal to at least one neighbor, with new values introduced in 0..5 order.

A221456

Number of 0..5 arrays of length n with each element unequal to at least one neighbor, with new values introduced in 0..5 order.

Terms

    a(0) =0a(1) =1a(2) =2a(3) =7a(4) =25a(5) =102a(6) =455a(7) =2192a(8) =11203a(9) =59814a(10) =329343a(11) =1851911a(12) =10560334a(13) =60776590a(14) =351887190a(15) =2045329031a(16) =11918417465a(17) =69563676328a(18) =406447507101

External references