T(n,k)=Number of nXk 0..2 arrays with every nonzero element less than or equal to some horizontal or vertical neighbor.

A202889

T(n,k)=Number of nXk 0..2 arrays with every nonzero element less than or equal to some horizontal or vertical neighbor.

Terms

    a(0) =1a(1) =3a(2) =3a(3) =9a(4) =35a(5) =9a(6) =22a(7) =265a(8) =265a(9) =22a(10) =51a(11) =1849a(12) =5493a(13) =1849a(14) =51a(15) =121a(16) =13345a(17) =109119a(18) =109119a(19) =13345a(20) =121a(21) =292a(22) =96941a(23) =2223723a(24) =6092872a(25) =2223723a(26) =96941a(27) =292a(28) =704a(29) =701275

External references