Number of tilings of an n X n square with rectangles with integer sides and area n.

Terms

a(0) =1a(1) =1a(2) =2a(3) =2a(4) =9a(5) =2a(6) =46a(7) =2a(8) =250a(9) =37a(10) =254a(11) =2a(12) =31052a(13) =2a(14) =1480a(15) =896a(16) =306174a(17) =2a(18) =2097506a(19) =2a(20) =6025516a(21) =6638a(22) =59930a(23) =2a(24) =22119057652a(25) =1141a(26) =400776a(27) =1028162a(28) =1205138020a(29) =2