Triangle T(n,k) represents the coefficients of (x^13*d/dx)^n, where n=1,2,3,...; generalization of Stirling numbers of second kind A008277, Lah-numbers A008297.

A223515

Triangle T(n,k) represents the coefficients of (x^13*d/dx)^n, where n=1,2,3,...; generalization of Stirling numbers of second kind A008277, Lah-numbers A008297.

Terms

    a(0) =1a(1) =13a(2) =1a(3) =325a(4) =39a(5) =1a(6) =12025a(7) =1807a(8) =78a(9) =1a(10) =589225a(11) =102375a(12) =5785a(13) =130a(14) =1a(15) =35942725a(16) =6936475a(17) =466830a(18) =14105a(19) =195a(20) =1a(21) =2623818925a(22) =549241875a(23) =41948725a(24) =1538810a(25) =29120a(26) =273a(27) =1a(28) =223024608625a(29) =49858620175

External references