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Search: id:A006151
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| A006151 |
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Number of Dyck paths.
(Formerly M4288)
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+0
3
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| 1, 1, 6, 91, 2548, 111384, 6852768, 553361016, 55804330152, 6774025632340
(list; graph; listen)
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OFFSET
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0,3
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COMMENT
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a(n) is the determinant of the 5X5 Hankel matrix [a_0, a_1, a_2, a_3, a_4 ; a_1, a_2, a_3, a_4, a_5 ; a_2, a_3, a_4, a_5, a_6 ; a_3, a_4, a_5, a_6, a_7 ; a_4, a_5, a_6, a_7, a_8] with a_j=A000108(n+j) . - Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Apr 12 2007
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REFERENCES
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S. J. Cyvin and I. Gutman, Kekule structures in benzenoid hydrocarbons, Lecture Notes in Chemistry, No. 46, Springer, New York, 1988 (see p. 183).
M. de Sainte-Catherine, Couplages et Pfaffiens en Combinatoire. Phys-ique et Informatique. Ph.D Dissertation, Universit\'{e} Bordeaux I, 1983.
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CROSSREFS
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Sequence in context: A000680 A013297 A095864 this_sequence A005327 A113266 A053512
Adjacent sequences: A006148 A006149 A006150 this_sequence A006152 A006153 A006154
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KEYWORD
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nonn
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AUTHOR
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njas
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