login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A074307 Square of permutation in A074305. 3
0, 2, 3, 1, 11, 5, 7, 13, 6, 4, 10, 19, 9, 27, 21, 15, 29, 14, 8, 18, 35, 17, 43, 37, 23, 45, 22, 12, 26, 51, 25, 59, 53, 31, 61, 30, 16, 34, 67, 33, 75, 69, 39, 77, 38, 20, 42, 83, 41, 91, 85, 47, 93, 46, 24, 50, 99, 49, 107, 101, 55, 109, 54, 28, 58, 115, 57, 123, 117, 63, 125 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

A permutation of the nonnegative integers.

REFERENCES

G. Venturini, Iterates of number-theoretic functions with periodic rational coefficients (generalization of the 3x+1 problem), Stud. Appl. Math., 86 (1992), 185-218.

LINKS

Table of n, a(n) for n=0..70.

Index entries for sequences that are permutations of the natural numbers

PROG

(PARI) a(m) = if(m%3==0, m/3*2, if(m%3==1, (m-1)/3*4+3, (m-2)/3*4+1)) for(i=0, 120, print1(a(a(i)), ", ")) (C. Ronaldo)

CROSSREFS

Cf. A074305, A074306, A074308.

Sequence in context: A009026 A046222 A291647 * A163486 A214649 A007440

Adjacent sequences:  A074304 A074305 A074306 * A074308 A074309 A074310

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane, Sep 23 2002

EXTENSIONS

More terms from Lambert Klasen (lambert.klasen(AT)gmx.de), Jan 02 2005

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified January 21 17:07 EST 2019. Contains 319350 sequences. (Running on oeis4.)