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 A223522 Triangle T(n,k) represents the coefficients of (x^20*d/dx)^n, where n=1,2,3,...; generalization of Stirling numbers of second kind A008277, Lah-numbers A008297. 23
 1, 20, 1, 780, 60, 1, 45240, 4320, 120, 1, 3483480, 382200, 13800, 200, 1, 334414080, 40556880, 1734600, 33600, 300, 1, 38457619200, 5039012160, 243505080, 5699400, 69300, 420, 1 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS EXAMPLE 1; 20,1; 780,60,1; 45240,4320,120,1; 3483480,382200,13800,200,1; 334414080,40556880,1734600,33600,300,1; 38457619200,5039012160,243505080,5699400,69300,420,1; 5153320972800,718724260800,38155703040,1024322880,15262800,127680,560,1; MAPLE b[0]:=f(x): for j from 1 to 10 do b[j]:=simplify(x^20*diff(b[j-1], x\$1); end do; CROSSREFS Cf. A008277, A019538, A035342, A035469, A049029, A049385, A092082, A132056, A223511-A223522, A223168-A223172, A223523-A223532. Sequence in context: A332258 A327023 A280621 * A040395 A040394 A040393 Adjacent sequences:  A223519 A223520 A223521 * A223523 A223524 A223525 KEYWORD nonn,easy,tabl AUTHOR Udita Katugampola, Mar 23 2013 STATUS approved

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Last modified August 2 08:13 EDT 2021. Contains 346422 sequences. (Running on oeis4.)