Number of nX4 0..1 arrays with no element equal to more than three of its king-move neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.
A281030
Number of nX4 0..1 arrays with no element equal to more than three of its king-move neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.
Terms
- a(0) =0a(1) =12a(2) =532a(3) =2324a(4) =9854a(5) =38972a(6) =146606a(7) =533340a(8) =1896352a(9) =6625144a(10) =22832024a(11) =77840640a(12) =263040538a(13) =882310796a(14) =2941006434a(15) =9750587480a(16) =32176182992a(17) =105744971236a(18) =346270006718
External references
- oeis: A281030