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A121604
Numbers k such that the radius of the smallest circle into which A121603(m) unit circles can be packed is 1 + csc(Pi/k).
1
2, 3, 4, 5, 6, 6, 7, 8, 9
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OFFSET
0,1
COMMENTS
From the diagrams in the link it appears likely that 10,12,12 are the next three terms.
LINKS
Table of n, a(n) for n=0..8.
E. Friedman, Erich's Packing Center: "Circles in Circles"
EXAMPLE
See A121602 for the case a(8) = 9 pertaining to A121603(8) = 11 unit circles.
CROSSREFS
Cf. A121603, A121570, A121598, A121601, A121602.
Sequence in context: A086419 A287354 A025548 * A071520 A195918 A371156
Adjacent sequences: A121601 A121602 A121603 * A121605 A121606 A121607
KEYWORD
nonn
AUTHOR
Rick L. Shepherd, Aug 09 2006
STATUS
approved

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Last modified November 25 02:36 EST 2024. Contains 378089 sequences.
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