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Search: id:A006135
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| A006135 |
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T(n+2,2) from table A045912 of characteristic polynomial of negative Pascal matrix.
(Formerly M4650)
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+0
4
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| 1, 9, 72, 626, 6084, 64974, 744193, 8965323, 112088583, 1441465015, 18952951005, 253712542005, 3447133563343, 47425573790397, 659506609478472, 9256644358552742, 130981854694547790, 1866712391002772586
(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).
W. F. Lunnon, The Pascal matrix, Fib. Quart. vol. 15 (1977) pp. 201-204.
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PROGRAM
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(PARI) a(n)=if(n<0, 0, polcoeff(charpoly(matrix(n+2, n+2, i, j, -binomial(i+j-2, i-1))), 2))
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CROSSREFS
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Cf. A045912, A006134, A006136.
Sequence in context: A033135 A127053 A001809 this_sequence A133672 A043079 A099973
Adjacent sequences: A006132 A006133 A006134 this_sequence A006136 A006137 A006138
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KEYWORD
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nonn,easy
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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EXTENSIONS
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Edited by Michael Somos, Jul 19 2002
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