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A246725
Decimal expansion of r_3, the third smallest radius for which a compact packing of the plane exists, with disks of radius 1 and r_3.
8
2, 8, 0, 7, 7, 6, 4, 0, 6, 4, 0, 4, 4, 1, 5, 1, 3, 7, 4, 5, 5, 3, 5, 2, 4, 6, 3, 9, 9, 3, 5, 1, 9, 2, 5, 6, 2, 8, 6, 7, 9, 9, 8, 0, 6, 3, 4, 3, 4, 0, 5, 1, 0, 8, 5, 9, 9, 6, 5, 8, 3, 9, 3, 2, 7, 3, 7, 3, 8, 5, 8, 6, 5, 8, 4, 4, 0, 5, 3, 9, 8, 3, 9, 6, 9, 6, 5, 9, 1, 2, 7, 0, 2, 6, 7, 1, 0, 7, 4, 1, 7, 1, 1
OFFSET
0,1
COMMENTS
Essentially the same digit sequence as A188934 and A188485. - R. J. Mathar, Sep 06 2014
FORMULA
(sqrt(17) - 3)/4.
EXAMPLE
0.2807764064044151374553524639935192562867998063434051...
MATHEMATICA
RealDigits[(Sqrt[17] - 3)/4, 10, 103] // First
CROSSREFS
Cf. A246723 (r_1), A246724 (r_2), A246726 (r_4), A246727 (r_5), A002193 (r_6 = sqrt(2)-1), A246728 (r_7), A246729 (r_8), A246730 (r_9).
Sequence in context: A372338 A020860 A309420 * A188934 A058655 A058964
KEYWORD
nonn,cons,easy
AUTHOR
STATUS
approved