Number of nX2 0..3 arrays with exactly floor(nX2/2) elements unequal to at least one king-move neighbor, with new values introduced in row major 0..3 order.
A222516
Number of nX2 0..3 arrays with exactly floor(nX2/2) elements unequal to at least one king-move neighbor, with new values introduced in row major 0..3 order.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =9a(4) =0a(5) =114a(6) =0a(7) =1881a(8) =0a(9) =33828a(10) =0a(11) =624019a(12) =0a(13) =11640594a(14) =0a(15) =218436985a(16) =0a(17) =4115818812a(18) =0a(19) =77807963106a(20) =0a(22) =0a(24) =0a(26) =0a(28) =0a(30) =0
External references
- oeis: A222516