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A004295
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Expansion of (1+2*x+x^2)/(1-42*x+x^2).
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0
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1, 44, 1848, 77572, 3256176, 136681820, 5737380264, 240833289268, 10109260768992, 424348119008396, 17812511737583640, 747701144859504484, 31385635572361604688, 1317448992894327892412, 55301472065989409876616
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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REFERENCES
| J. M. Alonso, Growth functions of amalgams, in Alperin, ed., Arboreal Group Theory, Springer, pp. 1-34, esp. p. 32.
P. de la Harpe, Topics in Geometric Group Theory, Univ. Chicago Press, 2000, p. 160, middle display.
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CROSSREFS
| Sequence in context: A114170 A130645 A004340 * A162882 A163230 A163748
Adjacent sequences: A004292 A004293 A004294 * A004296 A004297 A004298
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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