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A048682 Difference between maximal and central square-free kernel numbers dividing values of {binomial(n,k)} or A001405(n) resp. +0
1
0, 0, 0, 0, 0, 5, 0, 0, 0, 168, 0, 0, 0, 2145, 2860, 0, 0, 0, 0, 33592, 117572, 470288, 0, 0, 297160, 4791705, 2674440, 12900240, 28134060, 10835415, 0, 0, 0, 2074316640, 0, 0, 2524661700, 31810737420, 39384722520, 0, 0, 0, 82334307276, 1235014609140 (list; graph; listen)
OFFSET

1,6

EXAMPLE

n=10: the square-free kernels are :{1,10,15,30,210,42,210,30,15,10,1}. The maximal is 210 and the central one is 42. Thus a(10)=210-42=168.

CROSSREFS

Analogous cases for A001222, A000005 as applied to {binomial(n, k)} are given in A048623, A020740.

Sequence in context: A089877 A079074 A047754 this_sequence A099224 A136598 A105077

Adjacent sequences: A048679 A048680 A048681 this_sequence A048683 A048684 A048685

KEYWORD

nonn

AUTHOR

Labos E. (labos(AT)ana.sote.hu)

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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.


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