Number of coverings of {1..n} by translation and reflection of a single set.

A096203

Number of coverings of {1..n} by translation and reflection of a single set.

Terms

    a(0) =1a(1) =2a(2) =3a(3) =7a(4) =18a(5) =66a(6) =239a(7) =963a(8) =3792a(9) =15230a(10) =60297a(11) =240295a(12) =952530a(13) =3783000a(14) =14999274a(15) =59492918a(16) =235852544a(17) =935260075a(18) =3707948564a(19) =14702345112a(20) =58294850481a(21) =231152521791a(22) =916584704599

External references