Number of 4Xn integer arrays with each element equal to the number of horizontal and antidiagonal neighbors not equal to itself.

A265994

Number of 4Xn integer arrays with each element equal to the number of horizontal and antidiagonal neighbors not equal to itself.

Terms

    a(0) =1a(1) =1a(2) =10a(3) =2a(4) =2a(5) =4a(6) =24a(7) =15a(8) =47a(9) =68a(10) =112a(11) =196a(12) =281a(13) =672a(14) =1284a(15) =2333a(16) =3974a(17) =7237a(18) =13747a(19) =26006a(20) =48547a(21) =88889a(22) =163918a(23) =302093a(24) =565077a(25) =1052681a(26) =1959261a(27) =3630280a(28) =6723421a(29) =12508832

External references