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

 

Logo

Thanks to everyone who made a donation during our annual appeal!
To see the list of donors, or make a donation, see the OEIS Foundation home page.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A074306 Inverse of permutation in A074305. 3
0, 2, 3, 1, 6, 5, 9, 4, 12, 8, 15, 7, 18, 11, 21, 10, 24, 14, 27, 13, 30, 17, 33, 16, 36, 20, 39, 19, 42, 23, 45, 22, 48, 26, 51, 25, 54, 29, 57, 28, 60, 32, 63, 31, 66, 35, 69, 34, 72, 38, 75, 37, 78, 41, 81, 40, 84, 44, 87, 43, 90, 47, 93, 46, 96, 50, 99, 49, 102, 53, 105, 52 (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..71.

Index entries for sequences that are permutations of the natural numbers

PROG

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

CROSSREFS

Cf. A074305, A074307, A074308.

Sequence in context: A189970 A076631 A035485 * A294218 A036039 A279038

Adjacent sequences:  A074303 A074304 A074305 * A074307 A074308 A074309

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 20 16:20 EST 2019. Contains 319335 sequences. (Running on oeis4.)