Triangle T(n,k) represents the coefficients of (x^15*d/dx)^n, where n=1,2,3,...; generalization of Stirling numbers of second kind A008277, Lah-numbers A008297.

A223517

Triangle T(n,k) represents the coefficients of (x^15*d/dx)^n, where n=1,2,3,...; generalization of Stirling numbers of second kind A008277, Lah-numbers A008297.

Terms

    a(0) =1a(1) =15a(2) =1a(3) =435a(4) =45a(5) =1a(6) =18705a(7) =2415a(8) =90a(9) =1a(10) =1066185a(11) =158775a(12) =7725a(13) =150a(14) =1a(15) =75699135a(16) =12497985a(17) =722700a(18) =18825a(19) =225a(20) =1a(21) =6434426475a(22) =1150525845a(23) =75372885a(24) =2379300a(25) =38850a(26) =315a(27) =1a(28) =637008221025a(29) =121487010975

External references