T(n,k) = half the number of (n+1) X (k+1) binary arrays with no 2 X 2 subblock having exactly 2 ones.
A183782
T(n,k) = half the number of (n+1) X (k+1) binary arrays with no 2 X 2 subblock having exactly 2 ones.
Terms
- a(0) =5a(1) =13a(2) =13a(3) =33a(4) =47a(5) =33a(6) =85a(7) =161a(8) =161a(9) =85a(10) =217a(11) =567a(12) =730a(13) =567a(14) =217a(15) =557a(16) =1969a(17) =3435a(18) =3435a(19) =1969a(20) =557a(21) =1425a(22) =6887a(23) =15887a(24) =21935a(25) =15887a(26) =6887a(27) =1425a(28) =3653a(29) =24001
External references
- oeis: A183782