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A079278 Define b by b(1) = 1 and for n>1, b(n) = b(n-1)+1/(1+1/b(n-1)); sequence gives denominator of b(n). 6
1, 2, 10, 310, 363010, 594665194510, 1871071000515058250871610, 21362861761506953021644584296874581450310229239910 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

REFERENCES

Suggested by Leroy Quet Feb 14 2003.

FORMULA

Conjecture (Quet): a(m+1) = a(m)^2 + a(m)^3 /a(m-1)^2 - a(m)a(m-1)^2 for m >= 2.

EXAMPLE

The b sequence begins 1, 3/2, 21/10, 861/310, 1275141/363010, 2551762438701/594665194510, ...

MAPLE

b := proc(n) option remember; if n=1 then 1 else b(n-1)+1/(1+1/b(n-1)); fi; end;

CROSSREFS

Cf. A079269, A080581, A080582.

Sequence in context: A073834 A111837 A092123 * A015178 A206152 A013034

Adjacent sequences:  A079275 A079276 A079277 * A079279 A079280 A079281

KEYWORD

nonn,frac

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), Feb 16 2003

EXTENSIONS

The next term is too large to include.

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Last modified February 17 13:28 EST 2012. Contains 206031 sequences.