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Search: id:A140603
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| A140603 |
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Values of m for which C(m,a) + C(m,a+2) divides C(m,2a+2) for some nonnegative integer a with 2a+2 <= m. |
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+0
2
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OFFSET
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1,1
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COMMENT
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See A140601 which is the main entry for this sequence.
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EXAMPLE
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a(1) = 19 because C(19,3) + C(19,5) = 969 + 11628 = 12597 divides
C(19,8) = 75582, and 19 is the first nonnegative integer for which the required
condition holds.
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CROSSREFS
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Sequence in context: A029489 A133855 A141855 this_sequence A139580 A094841 A001986
Adjacent sequences: A140600 A140601 A140602 this_sequence A140604 A140605 A140606
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KEYWORD
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hard,more,nonn
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AUTHOR
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Andrew V. Sutherland (drew(AT)math.mit.edu), May 18 2008
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