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A373428 Triangle read by rows: Coefficients of the polynomials S2(n, x) * EZ(n, x), where S2 denote the Stirling set polynomials and EZ the Eulerian zig-zag polynomials A205497. 5

%I #6 Jun 13 2024 08:31:29

%S 1,0,1,0,1,1,0,1,4,4,1,0,1,10,28,26,9,1,0,1,22,137,291,261,102,17,1,0,

%T 1,45,555,2300,4150,3517,1479,306,29,1,0,1,89,2048,15152,48942,76259,

%U 61846,26976,6388,795,47,1

%N Triangle read by rows: Coefficients of the polynomials S2(n, x) * EZ(n, x), where S2 denote the Stirling set polynomials and EZ the Eulerian zig-zag polynomials A205497.

%H Peter Luschny, <a href="/A373428/a373428.png">Illustrating the polynomials</a>.

%e Tracing the computation:

%e 0: [1] * [1] = [1]

%e 1: [1] * [0, 1] = [0, 1]

%e 2: [1] * [0, 1, 1] = [0, 1, 1]

%e 3: [1, 1] * [0, 1, 3, 1] = [0, 1, 4, 4, 1]

%e 4: [1, 3, 1] * [0, 1, 7, 6, 1] = [0, 1, 10, 28, 26, 9, 1]

%e 5: [1, 7, 7, 1] * [0, 1, 15, 25, 10, 1] = [0, 1, 22, 137, 291, 261, 102, 17, 1]

%p EZP(Stirling2, 7); # Using function EZP from A373432.

%Y Cf. A048993 (Stirling2), A205497 (zig-zag Eulerian), A320956 (row sums).

%K nonn,tabf

%O 0,9

%A _Peter Luschny_, Jun 06 2024

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Last modified July 14 22:45 EDT 2024. Contains 374323 sequences. (Running on oeis4.)