T(n,k)=1/3 the number of nXk 0..2 arrays with no element equal both to the element above and to the element to its left.
A184694
T(n,k)=1/3 the number of nXk 0..2 arrays with no element equal both to the element above and to the element to its left.
Terms
- a(0) =1a(1) =3a(2) =3a(3) =9a(4) =24a(5) =9a(6) =27a(7) =192a(8) =192a(9) =27a(10) =81a(11) =1536a(12) =4080a(13) =1536a(14) =81a(15) =243a(16) =12288a(17) =86688a(18) =86688a(19) =12288a(20) =243a(21) =729a(22) =98304a(23) =1841856a(24) =4890528a(25) =1841856a(26) =98304a(27) =729a(28) =2187a(29) =786432
External references
- oeis: A184694