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A064171 a(1) = 1; a(n+1) = product of numerator and denominator of the continued fraction, [a(1); a(2), a(3),..., a(n)]. 0
1, 1, 2, 15, 3542, 44438728965, 87757630046458789424678387797052 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Numerator and denominator in definition have no common divisors >1.

LINKS

Table of n, a(n) for n=1..7.

EXAMPLE

[a(1); a(2), a(3)] = 1 + 1/(1 + 1/2) = 5/3. So a(4) = 5 * 3 = 15.

CROSSREFS

Sequence in context: A068409 A096232 A193869 * A135085 A290042 A080911

Adjacent sequences:  A064168 A064169 A064170 * A064172 A064173 A064174

KEYWORD

nonn

AUTHOR

Leroy Quet, Sep 19 2001

STATUS

approved

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Last modified January 20 17:47 EST 2018. Contains 297961 sequences.