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A052123
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Log_2 of denominators of coefficients in function a(x) such that a(a(x)) = exp(x) - 1.
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3
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0, 0, 1, 3, 0, 5, 7, 7, 8, 8, 12, 14, 14, 15, 16, 18, 18, 19, 21, 24, 24, 26, 28, 29, 26, 27, 32, 34, 35, 35
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,4
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REFERENCES
| R. P. Stanley, Enumerative Combinatorics, Cambridge, Vol. 2, 1999; see Problem 5.52.
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EXAMPLE
| x+1/4*x^2+1/48*x^3+1/3840*x^5-7/92160*x^6+1/645120*x^7+...
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CROSSREFS
| Cf. A052122, A052104, A052105.
Sequence in context: A193508 A052483 A019915 * A174190 A061035 A021331
Adjacent sequences: A052120 A052121 A052122 * A052124 A052125 A052126
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KEYWORD
| nonn,frac,easy
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), Jan 23 2000
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EXTENSIONS
| More terms from Vladeta Jovovic (vladeta(AT)eunet.rs), Jul 27 2002
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