Number of n X 3 0..2 arrays with no element equal to any value at offset (-1,-1) (-2,0) or (0,-2) and new values introduced in order 0..2.
A274954
Number of n X 3 0..2 arrays with no element equal to any value at offset (-1,-1) (-2,0) or (0,-2) and new values introduced in order 0..2.
Terms
- a(0) =3a(1) =24a(2) =90a(3) =384a(4) =1638a(5) =6936a(6) =29370a(7) =124416a(8) =527046a(9) =2232600a(10) =9457434a(11) =40062336a(12) =169706790a(13) =718889496a(14) =3045264762a(15) =12899948544a(16) =54645058950a(17) =231480184344a(18) =980565796314
External references
- oeis: A274954