Stirling2 triangle with scaled diagonals (powers of 6).

Terms

a(0) =1a(1) =6a(2) =1a(3) =36a(4) =18a(5) =1a(6) =216a(7) =252a(8) =36a(9) =1a(10) =1296a(11) =3240a(12) =900a(13) =60a(14) =1a(15) =7776a(16) =40176a(17) =19440a(18) =2340a(19) =90a(20) =1a(21) =46656a(22) =489888a(23) =390096a(24) =75600a(25) =5040a(26) =126a(27) =1a(28) =279936a(29) =5925312