Bitmaps of king + rook vs. king checkmate patterns on a standard 8 X 8 board.

Terms

a(0) =65541a(1) =65541a(2) =65545a(3) =65553a(4) =65569a(5) =65601a(6) =65665a(7) =66561a(8) =131077a(9) =131081a(10) =131082a(11) =131089a(12) =131090a(13) =131105a(14) =131106a(15) =131137a(16) =131138a(17) =131201a(18) =131202a(19) =262149a(20) =262164a(21) =262180a(22) =262212a(23) =262276a(24) =327681a(25) =524297a(26) =524298a(27) =524328a(28) =524360a(29) =524424