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A280234 Decimal expansion of log(27)/log(27/4). 0
1, 7, 2, 5, 9, 8, 2, 4, 5, 7, 8, 7, 8, 7, 1, 9, 1, 0, 8, 7, 1, 9, 0, 8, 5, 3, 1, 9, 4, 0, 6, 2, 0, 8, 5, 3, 6, 6, 5, 9, 6, 0, 2, 6, 6, 2, 0, 5, 9, 5, 4, 9, 4, 2, 7, 6, 7, 8, 7, 5, 2, 9, 0, 9, 1, 6, 0, 3, 5, 0, 9, 8, 6, 4, 8, 6, 6, 0, 6, 8, 9, 9 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Appears as an exponent in an upper bound on the number of partitions of a set into disjoint unions; related to the ASTRAL algorithm in phylogenetic reconstruction.

LINKS

Table of n, a(n) for n=1..82.

Daniel Kane and Terence Tao, A bound on partitioning clusters, arXiv:1702.00912 [math.CO] (2017); submitted to Electronic Journal of Combinatorics.

EXAMPLE

1.72598245787871910871908531940620853665960266205954942767875290916035...

MATHEMATICA

RealDigits[N[Log[27]/(Log[27/4]), 100]] [[1]] (* Vincenzo Librandi, Feb 24 2017 *)

PROG

(PARI) log(27)/log(27/4)

CROSSREFS

Sequence in context: A072761 A127885 A006577 * A073652 A277848 A248285

Adjacent sequences:  A280231 A280232 A280233 * A280235 A280236 A280237

KEYWORD

cons,nonn

AUTHOR

Charles R Greathouse IV, Feb 24 2017

STATUS

approved

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Last modified September 25 16:31 EDT 2017. Contains 292499 sequences.