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A048681
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Maximum over k of the largest squarefree number dividing value of {C(n,k)}.
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0
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1, 2, 3, 6, 10, 15, 35, 70, 42, 210, 462, 462, 858, 3003, 5005, 4290, 24310, 24310, 92378, 125970, 293930, 646646, 1352078, 1352078, 817190, 5311735, 2897310, 13123110, 34597290, 17298645, 100180065, 200360130, 129644790, 2203961430
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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EXAMPLE
| n=10, the squarefree kernels are :{1,10,15,30,210,42,210,30,15,10,1}. so the maximal largest sq.f divisor is that of C(10,4),it is 210, so a(10)=210. It is not equal to the central A048633(10)=42.
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CROSSREFS
| Analogous sequences for A001221, A001222, A000005 are given in A048273, A048275, A048620.
Sequence in context: A178659 A077011 A055789 * A051891 A108062 A075623
Adjacent sequences: A048678 A048679 A048680 * A048682 A048683 A048684
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KEYWORD
| nonn
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AUTHOR
| Labos E. (labos(AT)ana.sote.hu)
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