Stirling2 triangle with scaled diagonals (powers of 4).

Terms

a(0) =1a(1) =4a(2) =1a(3) =16a(4) =12a(5) =1a(6) =64a(7) =112a(8) =24a(9) =1a(10) =256a(11) =960a(12) =400a(13) =40a(14) =1a(15) =1024a(16) =7936a(17) =5760a(18) =1040a(19) =60a(20) =1a(21) =4096a(22) =64512a(23) =77056a(24) =22400a(25) =2240a(26) =84a(27) =1a(28) =16384a(29) =520192