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Search: id:A139605
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| A139605 |
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Weights for expansion of (f(x)D_x)^n : coefficients of A-polynomials of Comtet. |
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+0
3
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| 1, 1, 1, 1, 1, 3, 1, 1, 4, 1, 7, 4, 6, 1, 1, 11, 4, 7, 1, 15, 30, 5, 25, 10, 10, 1, 1, 26, 34, 32, 11, 15, 1, 31, 146, 57, 34, 6, 90, 120, 15, 65, 20, 15, 1
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OFFSET
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1,6
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COMMENT
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This entry and the references differ slightly among themselves in the order of coefficients for higher order terms. Table on p. 167 of Comtet has at least one index error.
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REFERENCES
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F. Bergeron, G. Labelle and P. Leroux, Combinatorial Species and Tree-like Structures, (1997), Cambridge University Press, p. 386
L. Comtet, Une formule explicite pour puisances successives de l'operateur de derivation de Lie, Comtes Rendus Acad. Sc. Paris, Serie A tome 276 (1973), pp. 165 - 168
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LINKS
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T. Copeland, Mathemagical Forests , (June 2008)
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CROSSREFS
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Sequence in context: A138684 A132442 A074927 this_sequence A098712 A023579 A023577
Adjacent sequences: A139602 A139603 A139604 this_sequence A139606 A139607 A139608
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KEYWORD
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nonn
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AUTHOR
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Tom Copeland (tcjpn(AT)msn.com), Jun 12 2008
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