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A080985 Define b by b(1) = 1 and for n>1, b(n) = b(n-1)+1/(2+1/b(n-1)); sequence gives denominator of b(n). 2
1, 3, 33, 4785, 118289985, 83574429584465985, 47533348097639173195113266868291585, 17303590888755815609063515462865866934559547198082397287546077959536385 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Suggested by Leroy Quet, Feb 26 2003.

LINKS

Table of n, a(n) for n=1..8.

FORMULA

See under A080984.

EXAMPLE

See under A080984.

PROG

Reduce: See under A080984.

CROSSREFS

Cf. A080984, A080986, A080987, A079269, A079278.

Sequence in context: A319750 A204687 A134477 * A006854 A241793 A225427

Adjacent sequences:  A080982 A080983 A080984 * A080986 A080987 A080988

KEYWORD

frac,nonn

AUTHOR

Hugo Pfoertner, Feb 26 2003

STATUS

approved

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Last modified May 23 11:05 EDT 2019. Contains 323513 sequences. (Running on oeis4.)