Number of n X 3 0..1 arrays with no element equal to more than two of its horizontal, vertical and antidiagonal neighbors and with new values introduced in order 0 sequentially upwards.
A280599
Number of n X 3 0..1 arrays with no element equal to more than two of its horizontal, vertical and antidiagonal neighbors and with new values introduced in order 0 sequentially upwards.
Terms
- a(0) =4a(1) =18a(2) =45a(3) =116a(4) =293a(5) =735a(6) =1844a(7) =4626a(8) =11611a(9) =29151a(10) =73200a(11) =183828a(12) =461671a(13) =1159483a(14) =2912066a(15) =7313756a(16) =18368803a(17) =46134069a(18) =115867838a(19) =291007480a(20) =730878941a(21) =1835636845a(22) =4610288394a(23) =11578956554a(24) =29081095145a(25) =73038541289a(26) =183439739500
External references
- oeis: A280599