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Search: id:A038234
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| A038234 |
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Triangle whose (i,j)-th entry is binomial(i,j)*4^(i-j)*4^j. |
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+0
1
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| 1, 4, 4, 16, 32, 16, 64, 192, 192, 64, 256, 1024, 1536, 1024, 256, 1024, 5120, 10240, 10240, 5120, 1024, 4096, 24576, 61440, 81920, 61440, 24576, 4096, 16384, 114688, 344064, 573440, 573440, 344064, 114688, 16384, 65536, 524288
(list; table; graph; listen)
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OFFSET
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0,2
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COMMENT
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Also the absolute values of the coefficients of the Belyi Polynomial P_(i,i)(x). [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Oct 16 2008]
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REFERENCES
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B. N. Cyvin et al., Isomer enumeration of unbranched catacondensed polygonal systems with pentagons and heptagons, Match, No. 34 (Oct 1996), pp. 109-121.
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LINKS
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I. Bauer, F. Catanese, F. Grunewald, Chebycheff and Belyi Polinomials, Dessins de'Enfants, Beauville Surfaces and Group Theory, Med. J. Math. vol 3 no 2 (2006) 121-146. [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Oct 16 2008]
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CROSSREFS
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Sequence in context: A065732 A092959 A158101 this_sequence A099462 A092266 A107382
Adjacent sequences: A038231 A038232 A038233 this_sequence A038235 A038236 A038237
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KEYWORD
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nonn,tabl,easy
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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