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).

1, 3, 33, 4785, 118289985, 83574429584465985, 47533348097639173195113266868291585, 17303590888755815609063515462865866934559547198082397287546077959536385

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