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A080383
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Number of i (0 <= i <= n) such that the central binomial coefficient C(n,floor(n/2)) = A001405(n) is divisible by C(n,i).
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7
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1, 2, 3, 4, 3, 6, 3, 6, 3, 6, 3, 6, 7, 10, 3, 6, 3, 6, 3, 6, 3, 6, 3, 6, 3, 8, 3, 6, 3, 6, 7, 10, 3, 6, 3, 6, 3, 8, 3, 6, 5, 10, 3, 6, 3, 6, 3, 6, 3, 6, 3, 6, 3, 6, 3, 6, 7, 10, 3, 6, 3, 6, 3, 6, 3, 6, 3, 6, 3, 6, 3, 6, 3, 6, 3, 6, 3, 6, 3, 6, 3, 6, 3, 6, 7, 10, 3, 6, 3, 6, 7, 10, 3, 6, 3, 6, 3, 6, 3, 6, 3, 6
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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EXAMPLE
| Below n<=500 only a few values of a(n) arise: {1,2,3,4,5,6,7,8,10,11,14}.
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MATHEMATICA
| Table[Count[Table[IntegerQ[Binomial[n, Floor[n/2]]/Binomial[n, j]], {j, 0, n}], True], {n, 1, 500}]
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CROSSREFS
| Cf. A001405, A000225, A080384-A080388, A022292, A020475, A067348, A042996.
Sequence in context: A078908 A159797 A152920 * A086369 A092089 A117659
Adjacent sequences: A080380 A080381 A080382 * A080384 A080385 A080386
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KEYWORD
| nonn
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AUTHOR
| Labos E. (labos(AT)ana.sote.hu), Mar 12 2003
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EXTENSIONS
| Edited by Dean Hickerson (dean.hickerson(AT)yahoo.com), Mar 14 2003
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