Number of n X 3 0..4 arrays with each element equal to the number its horizontal and vertical neighbors equal to itself.

A195964

Number of n X 3 0..4 arrays with each element equal to the number its horizontal and vertical neighbors equal to itself.

Terms

    a(0) =2a(1) =2a(2) =5a(3) =7a(4) =14a(5) =25a(6) =35a(7) =56a(8) =107a(9) =173a(10) =284a(11) =491a(12) =805a(13) =1338a(14) =2299a(15) =3817a(16) =6348a(17) =10741a(18) =17955a(19) =29996a(20) =50517a(21) =84551a(22) =141438a(23) =237601a(24) =398131a(25) =666648a(26) =1118507a(27) =1874589a(28) =3140516a(29) =5266459

External references