Number of n X 3 0..2 arrays with no element equal to any value at offset (-2,0) (-1,2) or (0,-2) and new values introduced in order 0..2.
A275560
Number of n X 3 0..2 arrays with no element equal to any value at offset (-2,0) (-1,2) or (0,-2) and new values introduced in order 0..2.
Terms
- a(0) =3a(1) =36a(2) =126a(3) =504a(4) =1872a(5) =7200a(6) =27360a(7) =104256a(8) =397440a(9) =1513728a(10) =5769216a(11) =21980160a(12) =83755008a(13) =319131648a(14) =1215995904a(15) =4633362432a(16) =17654611968a(17) =67270017024a(18) =256320995328a(19) =976668327936
External references
- oeis: A275560