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A047692
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Denominators of coefficients in Taylor series for exp(tan(x)).
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3
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1, 1, 2, 2, 8, 120, 240, 720, 5760, 362880, 3628800, 57600, 691200, 6227020800, 830269440, 261534873600, 20922789888000, 355687428096000, 914624815104000, 426824913715200, 4742499041280000, 51090942171709440000, 3784514234941440000
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OFFSET
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0,3
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REFERENCES
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CRC Standard Mathematical Tables and Formulae, 30th ed. 1996, p. 42.
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LINKS
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EXAMPLE
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1 + 1*x + (1/2)*x^2 + (1/2)*x^3 + (3/8)*x^4 + (37/120)*x^5 + (59/240)*x^6 + (137/720)*x^7 + (871/5760)*x^8 + ...
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CROSSREFS
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KEYWORD
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nonn,easy,frac
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AUTHOR
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STATUS
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approved
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