Number of 3Xn 0..1 arrays with every element equal to 0, 1, 2, 3, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
A303470
Number of 3Xn 0..1 arrays with every element equal to 0, 1, 2, 3, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =4a(1) =32a(2) =170a(3) =948a(4) =5237a(5) =29009a(6) =160590a(7) =888993a(8) =4921496a(9) =27244949a(10) =150826626a(11) =834967061a(12) =4622327859a(13) =25588933014a(14) =141658809728a(15) =784214751260
External references
- oeis: A303470