Number of 4Xn 0..2 arrays with no element equal to any value at offset (0,-1) (-1,-2) or (-2,0) and new values introduced in order 0..2.
A275039
Number of 4Xn 0..2 arrays with no element equal to any value at offset (0,-1) (-1,-2) or (-2,0) and new values introduced in order 0..2.
Terms
- a(0) =6a(1) =54a(2) =146a(3) =570a(4) =2185a(5) =8273a(6) =31495a(7) =120845a(8) =462819a(9) =1770014a(10) =6774047a(11) =25932054a(12) =99241078a(13) =379774913a(14) =1453487054a(15) =5562892365a(16) =21289984945a(17) =81479806330a(18) =311837664172
External references
- oeis: A275039