T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with 2X2 edge jumps all no more than +1 in one of the clockwise or counterclockwise directions or both.
A234760
T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with 2X2 edge jumps all no more than +1 in one of the clockwise or counterclockwise directions or both.
Terms
- a(0) =110a(1) =1014a(2) =1014a(3) =8968a(4) =26642a(5) =8968a(6) =80010a(7) =646036a(8) =646036a(9) =80010a(10) =712722a(11) =15939010a(12) =41065150a(13) =15939010a(14) =712722a(15) =6350732a(16) =392044622a(17) =2683721676a(18) =2683721676a(19) =392044622a(20) =6350732a(21) =56585338a(22) =9648827736a(23) =174451064914a(24) =469243923298
External references
- oeis: A234760