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A105216 Maximum denominator among the n! ratios equal to the continued fractions which have the permutations of (1,2,3,...,n) for terms. 1
1, 2, 7, 31, 164, 1021, 7340, 59899, 547423, 5541311, 61560751, 744810564, 9749580487, 137299957892, 2069988277027, 33266800950301, 567742165061876, 10254686071781119, 195439907769223706, 3919618523321600065, 82517650453354285621, 1819502802723019762607 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Calculated by Vladeta Jovovic and David W. Wilson.

LINKS

Alois P. Heinz, Table of n, a(n) for n = 1..200

FORMULA

a(n) ~ c * n!, where c = 1.69579254611555585961617066333... . - Vaclav Kotesovec, Aug 25 2014

MAPLE

r:= proc(l) local j; infinity; for j to nops(l) do l[j] +1/% od end: gl:= proc(n) local i, l; l:=[]; for i from 2 to n do l:= `if` (irem (i, 2)=0, [l[], i], [i, l[]]) od; [l[], 1] end: a:= n-> denom (r (gl (n))): seq (a(n), n=1..25);  # Alois P. Heinz, Nov 18 2009

CROSSREFS

Cf. A105151.

Sequence in context: A277396 A227119 A002872 * A260532 A193657 A007164

Adjacent sequences:  A105213 A105214 A105215 * A105217 A105218 A105219

KEYWORD

nonn

AUTHOR

Leroy Quet, Apr 12 2005

EXTENSIONS

More terms from Alois P. Heinz, Nov 18 2009

STATUS

approved

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Last modified January 19 03:54 EST 2020. Contains 331031 sequences. (Running on oeis4.)