Number of squares of size n^2 in all tilings of an (n+2) X (n+2) square using integer-sided square tiles.

A226892

Number of squares of size n^2 in all tilings of an (n+2) X (n+2) square using integer-sided square tiles.

Terms

    a(0) =0a(1) =29a(2) =69a(3) =153a(4) =373a(5) =917a(6) =2321a(7) =5933a(8) =15317a(9) =39737a(10) =103461a(11) =269925a(12) =705169a(13) =1843709a(14) =4822949a(15) =12620249a(16) =33029909a(17) =86456693a(18) =226319505a(19) =592468365a(20) =1551031477a(21) =4060538489a(22) =10630442309a(23) =27830559173a(24) =72860864273a(25) =190751433437a(26) =499392464901

External references