A179869 Jumping to the multiples or from previous first multiples and returning to the next number not used yet.

2, 4, 3, 6, 5, 10, 7, 14, 8, 10, 9, 12, 11, 22, 13, 26, 15, 18, 16, 18, 17, 34

Offset

0,1

Comments

2 go to 4 and return to next number = 3, 3 go to 6 and return to next number = 5, 5 go to 10 and return to next number = 7, 7 go to 14 and return to next number = 8, 8 go to 10 (hit by previous multiple of 2) and return to next number = 9, 9 go to 12 (hit by previous multiple of 3) and return to next number = 11, and so on.

Links

Table of n, a(n) for n=0..21.

Crossrefs

Cf. A000040

Sequence in context: A283312 A280985 A127202 * A179881 A227113 A034701

Adjacent sequences: A179866 A179867 A179868 * A179870 A179871 A179872

Keyword

easy,nonn

Author

Odimar Fabeny, Jul 30 2010

Status

approved