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Search: id:A007311
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| A007311 |
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Reversion of o.g.f. for Bell numbers (A000110) omitting a(0)=1.
(Formerly M0676)
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+0
2
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| 1, -2, 3, -5, 7, -14, 11, -66, -127, -992, -5029, -30899, -193321, -1285300, -8942561, -65113125, -494605857, -3911658640, -32145949441, -274036507173, -2419502677445, -22093077575496, -208364964369913, -2027216779571754, -20323053380033763, -209715614081160850
(list; graph; listen)
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OFFSET
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1,2
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REFERENCES
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N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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LINKS
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Index entries for reversions of series
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MAPLE
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read transforms; A := series(exp(exp(x)-1), x, 60); SERIESTOLISTMULT(%); subsop(1=NULL, %); REVERT(%);
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PROGRAM
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(PARI) a(n)=if(n<1, 0, polcoeff(serreverse(-1+serlaplace(exp(exp(x+x*O(x^n))-1))), n))
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CROSSREFS
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Cf. A000110.
Sequence in context: A084761 A038965 A055694 this_sequence A031345 A114625 A046808
Adjacent sequences: A007308 A007309 A007310 this_sequence A007312 A007313 A007314
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KEYWORD
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sign
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com), Mira Bernstein (mira(AT)math.berkeley.edu)
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EXTENSIONS
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Signs corrected Dec 24 2001
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