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A223526 Triangle S(n,k) by rows: coefficients of 3^(n/2)*(x^(2/3)*d/dx)^n when n=0,2,4,6,... 0

%I #25 Mar 15 2015 16:55:29

%S 1,1,3,4,24,9,28,252,189,27,280,3360,3780,1080,81,3640,54600,81900,

%T 35100,5265,243,58240,1048320,1965600,1123200,252720,23328,729,

%U 1106560,23237760,52284960,37346400,11203920,1551312,96957,2187,24344320,584263680,1533692160

%N Triangle S(n,k) by rows: coefficients of 3^(n/2)*(x^(2/3)*d/dx)^n when n=0,2,4,6,...

%H U. N. Katugampola, <a href="http://authors.elsevier.com/a/1QhUNLvMg0Zs~">Mellin Transforms of Generalized Fractional Integrals and Derivatives</a>, Appl. Math. Comput. 257(2015) 566-580.

%F T(n,0) = A007559(n) and T(n,n) = A000244(n) for all n>=0

%e Triangle begins:

%e 1;

%e 1, 3;

%e 4, 24, 9;

%e 28, 252, 189, 27;

%e 280, 3360, 3780, 1080, 81;

%e 3640, 54600, 81900, 35100, 5265, 243;

%e 58240, 1048320, 1965600, 1123200, 252720, 23328, 729;

%e 1106560, 23237760, 52284960, 37346400, 11203920, 1551312, 96957, 2187;

%e 24344320, 584263680, 1533692160, 1314593280, 492972480, 91010304, 8532216, 384912, 6561;

%p a[0]:= f(x):

%p for i from 1 to 20 do

%p a[i] := simplify(3^((i+1)mod 2)*x^(((i+1)mod 2+1)/3)*(diff(a[i-1],x$1 )));

%p end do:

%p for j from 1 to 10 do

%p b[j]:=a[2j];

%p end do;

%Y Even row of A223169.

%Y Cf. A223168-A223172, A223511-A223532.

%K nonn,tabl

%O 1,3

%A _Udita Katugampola_, Mar 18 2013

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Last modified September 4 19:34 EDT 2024. Contains 375685 sequences. (Running on oeis4.)