Number of 3 X n integer arrays with each element equal to the number of horizontal and antidiagonal neighbors not equal to itself.

A265993

Number of 3 X n integer arrays with each element equal to the number of horizontal and antidiagonal neighbors not equal to itself.

Terms

    a(0) =1a(1) =2a(2) =6a(3) =2a(4) =3a(5) =9a(6) =9a(7) =16a(8) =27a(9) =35a(10) =55a(11) =105a(12) =145a(13) =202a(14) =369a(15) =589a(16) =857a(17) =1371a(18) =2229a(19) =3444a(20) =5411a(21) =8585a(22) =13399a(23) =21170a(24) =33573a(25) =52488a(26) =82413a(27) =130606a(28) =205585a(29) =322481

External references