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A006275 A predictable Pierce expansion.
(Formerly M1342)
6
2, 5, 7, 197, 199, 7761797, 7761799, 467613464999866416197, 467613464999866416199, 102249460387306384473056172738577521087843948916391508591105797 (list; graph; refs; listen; history; internal format)
OFFSET

0,1

REFERENCES

J. O. Shallit, Some predictable Pierce expansions, Fib. Quart., 22 (1984), 332-335.

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

LINKS

J. O. Shallit, Some predictable Pierce expansions, Fib. Quart., 22 (1984), 332-335.

Eric Weisstein's World of Mathematics, Pierce Expansion

FORMULA

Let u(0)=1+sqrt(2) and u(n+1)=u(n)/frac(u(n)) where frac(x) is the fractional part of x, then a(n)=floor(u(n)). - Benoit Cloitre (benoit7848c(AT)orange.fr), Mar 09 2004

EXAMPLE

Let c(0)=6, c(n+1) = c(n)^3-3*c(n); then this sequence is 2, c(0)-1, c(0)+1, c(1)-1, c(1)+1, c(2)-1, c(2)+1, ...

PROG

(PARI) r=1+sqrt(2); for(n=1, 10, r=r/(r-floor(r)); print1(floor(r), ", "))

CROSSREFS

Sequence in context: A041445 A041961 A058854 * A042673 A007571 A062621

Adjacent sequences:  A006272 A006273 A006274 * A006276 A006277 A006278

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

EXTENSIONS

More terms from James A. Sellers (sellersj(AT)math.psu.edu), May 19 2000

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Last modified February 14 16:11 EST 2012. Contains 205635 sequences.