Number of 0..n arrays of length 5 with each element differing from at least one neighbor by something other than 1.

A221575

Number of 0..n arrays of length 5 with each element differing from at least one neighbor by something other than 1.

Terms

    a(0) =6a(1) =57a(2) =342a(3) =1293a(4) =3734a(5) =8991a(6) =19014a(7) =36497a(8) =64998a(9) =109059a(10) =174326a(11) =267669a(12) =397302a(13) =572903a(14) =805734a(15) =1108761a(16) =1496774a(17) =1986507a(18) =2596758a(19) =3348509a(20) =4265046a(21) =5372079a(22) =6697862a(23) =8273313a(24) =10132134a(25) =12310931a(26) =14849334a(27) =17790117a(28) =21179318a(29) =25066359

External references