Number of 0..n arrays of length 5 with each element differing from at least one neighbor by 2 or more, starting with 0.

A221516

Number of 0..n arrays of length 5 with each element differing from at least one neighbor by 2 or more, starting with 0.

Terms

    a(0) =0a(1) =3a(2) =30a(3) =130a(4) =381a(5) =884a(6) =1765a(7) =3174a(8) =5285a(9) =8296a(10) =12429a(11) =17930a(12) =25069a(13) =34140a(14) =45461a(15) =59374a(16) =76245a(17) =96464a(18) =120445a(19) =148626a(20) =181469a(21) =219460a(22) =263109a(23) =312950a(24) =369541a(25) =433464a(26) =505325a(27) =585754a(28) =675405a(29) =774956

External references