Number of perfect squared rectangles of order n up to symmetries of the rectangle.
A217154
Number of perfect squared rectangles of order n up to symmetries of the rectangle.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =0a(7) =0a(8) =2a(9) =14a(10) =62a(11) =235a(12) =821a(13) =2868a(14) =10193a(15) =36404a(16) =130174a(17) =466913a(18) =1681999a(19) =6083873
External references
- oeis: A217154