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A006135 T(n+2,2) from table A045912 of characteristic polynomial of negative Pascal matrix.
(Formerly M4650)
+0
4
1, 9, 72, 626, 6084, 64974, 744193, 8965323, 112088583, 1441465015, 18952951005, 253712542005, 3447133563343, 47425573790397, 659506609478472, 9256644358552742, 130981854694547790, 1866712391002772586 (list; graph; listen)
OFFSET

1,2

REFERENCES

W. F. Lunnon, The Pascal matrix, Fib. Quart. vol. 15 (1977) pp. 201-204.

PROGRAM

(PARI) a(n)=if(n<0, 0, polcoeff(charpoly(matrix(n+2, n+2, i, j, -binomial(i+j-2, i-1))), 2))

CROSSREFS

Cf. A045912, A006134, A006136.

Adjacent sequences: A006132 A006133 A006134 this_sequence A006136 A006137 A006138

Sequence in context: A033135 A127053 A001809 this_sequence A133672 A043079 A099973

KEYWORD

nonn,easy

AUTHOR

njas

EXTENSIONS

Edited by Michael Somos, Jul 19 2002

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Last modified October 7 08:31 EDT 2008. Contains 144667 sequences.


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