Stirling2 triangle with scaled diagonals (powers of 2).

Terms

a(0) =1a(1) =2a(2) =1a(3) =4a(4) =6a(5) =1a(6) =8a(7) =28a(8) =12a(9) =1a(10) =16a(11) =120a(12) =100a(13) =20a(14) =1a(15) =32a(16) =496a(17) =720a(18) =260a(19) =30a(20) =1a(21) =64a(22) =2016a(23) =4816a(24) =2800a(25) =560a(26) =42a(27) =1a(28) =128a(29) =8128