T(n,k)=Number of nXk 0..3 arrays with no element equal to one plus the sum of elements to its left or three plus the sum of the elements above it, modulo 4.
A239340
T(n,k)=Number of nXk 0..3 arrays with no element equal to one plus the sum of elements to its left or three plus the sum of the elements above it, modulo 4.
Terms
- a(0) =2a(1) =5a(2) =5a(3) =12a(4) =31a(5) =12a(6) =28a(7) =172a(8) =172a(9) =28a(10) =66a(11) =926a(12) =2187a(13) =926a(14) =66a(15) =156a(16) =5078a(17) =27341a(18) =27341a(19) =5078a(20) =156a(21) =368a(22) =27861a(23) =346028a(24) =790681a(25) =346028a(26) =27861a(27) =368a(28) =868a(29) =152260
External references
- oeis: A239340