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A104548
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Triangle read by rows giving coefficients of Bessel polynomial p_n(x).
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0
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1, 0, 1, 1, 0, 1, 3, 3, 0, 1, 6, 15, 15, 0, 1, 10, 45, 105, 105, 0, 1, 15, 105, 420, 945, 945, 0, 1, 21, 210, 1260, 4725, 10395, 10395, 0, 1, 28, 378, 3150, 17325, 62370, 135135, 135135, 0, 1, 36, 630, 6930, 51975, 270270, 945945, 2027025, 2027025, 0, 1, 45
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OFFSET
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1,7
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LINKS
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Table of n, a(n) for n=1..56.
Eric Weisstein's World of Mathematics, Bessel Polynomial
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EXAMPLE
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1, 0; 1, 1, 0; 1, 3, 3, 0; 1, 6, 15, 15, 0; 1, 10, 45, 105, 105, 0; ...
x, x + x^2, 3*x + 3*x^2 + x^3, 15*x + 15*x^2 + 6*x^3 + x^4, ...
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CROSSREFS
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Essentially the same as A001498 (the main entry).
Sequence in context: A185282 A193470 A102752 * A085707 A141947 A216804
Adjacent sequences: A104545 A104546 A104547 * A104549 A104550 A104551
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KEYWORD
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nonn,tabl
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AUTHOR
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Eric W. Weisstein, Mar 14, 2005
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STATUS
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approved
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