Number of n X 2 0..1 arrays with no 1 equal to more than three of its king-move neighbors, with the exception of exactly two elements.

A282475

Number of n X 2 0..1 arrays with no 1 equal to more than three of its king-move neighbors, with the exception of exactly two elements.

Terms

    a(0) =0a(1) =0a(2) =5a(3) =18a(4) =89a(5) =408a(6) =1754a(7) =7528a(8) =31798a(9) =132476a(10) =547019a(11) =2240930a(12) =9117527a(13) =36882844a(14) =148457752a(15) =594947104a(16) =2375067932a(17) =9448915992a(18) =37475891553a(19) =148223978050a(20) =584783169893

External references