Number of nontrivially compound perfect squared rectangles of order n up to symmetries of the rectangle.
A217153
Number of nontrivially compound 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) =0a(9) =0a(10) =0a(11) =0a(12) =4a(13) =48a(14) =264a(15) =1256a(16) =5396a(17) =22540a(18) =92060a(19) =370788
External references
- oeis: A217153