Number of 0..7 arrays of length n with each element differing from at least one neighbor by something other than 1, starting with 0.
A221541
Number of 0..7 arrays of length n with each element differing from at least one neighbor by something other than 1, starting with 0.
Terms
- a(0) =0a(1) =7a(2) =44a(3) =350a(4) =2658a(5) =20386a(6) =156098a(7) =1195561a(8) =9156379a(9) =70126074a(10) =537074685a(11) =4113296146a(12) =31502516844a(13) =241268447450
External references
- oeis: A221541