T(n,k)=Half the number of (n+1)X(k+1) 0..2 arrays with every 2X2 subblock having two or three distinct clockwise edge differences.
A210276
T(n,k)=Half the number of (n+1)X(k+1) 0..2 arrays with every 2X2 subblock having two or three distinct clockwise edge differences.
Terms
- a(0) =35a(1) =273a(2) =273a(3) =2130a(4) =5558a(5) =2130a(6) =16620a(7) =113248a(8) =113248a(9) =16620a(10) =129684a(11) =2307956a(12) =6028871a(13) =2307956a(14) =129684a(15) =1011912a(16) =47036870a(17) =321050788a(18) =321050788a(19) =47036870a(20) =1011912a(21) =7895856a(22) =958632858a(23) =17097482699a(24) =44678808183a(25) =17097482699a(26) =958632858
External references
- oeis: A210276