Increasing length runs of consecutive composite numbers (endpoints).

Terms

a(0) =4a(1) =10a(2) =28a(3) =96a(4) =126a(5) =540a(6) =906a(7) =1150a(8) =1360a(9) =9586a(10) =15726a(11) =19660a(12) =31468a(13) =156006a(14) =360748a(15) =370372a(16) =492226a(17) =1349650a(18) =1357332a(19) =2010880a(20) =4652506a(21) =17051886a(22) =20831532a(23) =47326912a(24) =122164968a(25) =189695892a(26) =191913030