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A033478 3x+1 sequence beginning at 3. 9
3, 10, 5, 16, 8, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1, 4, 2, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

REFERENCES

C. A. Pickover, The Math Book, Sterling, NY, 2009; see p. 374.

LINKS

Table of n, a(n) for n=0..97.

Index entries for sequences related to 3x+1 (or Collatz) problem

MAPLE

f:=proc(n) if n mod 2 = 0 then n/2 else 3*n+1; fi; end; g:=proc(n) local i, t1; t1:=[n]; for i from 1 to 120 do t1:=[op(t1), f(t1[nops(t1)])]; od; t1; end; g(3);

CROSSREFS

Sequence in context: A045985 A247034 A035411 * A111127 A140948 A068489

Adjacent sequences:  A033475 A033476 A033477 * A033479 A033480 A033481

KEYWORD

nonn

AUTHOR

Jeff Burch

STATUS

approved

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Last modified September 17 13:44 EDT 2014. Contains 246847 sequences.