A049468 Replace each fraction p/q in Farey tree A007305/A007306 with p+2q.

2, 3, 5, 7, 8, 9, 12, 13, 11, 11, 16, 19, 17, 18, 21, 19, 14, 13, 20, 25, 23, 26, 31, 29, 22, 23, 31, 34, 29, 27, 30, 25, 17, 15, 24, 31, 29, 34, 41, 39, 30, 33, 45, 50, 43, 41, 46, 39, 27, 28, 41, 49, 44, 47, 55, 50, 37, 35, 46, 49, 41, 36, 39, 31, 20, 17, 28, 37

Offset

0,1

References

J. C. Lagarias, Number Theory and Dynamical Systems, pp. 35-72 of S. A. Burr, ed., The Unreasonable Effectiveness of Number Theory, Proc. Sympos. Appl. Math., 46 (1992). Amer. Math. Soc.

Links

Table of n, a(n) for n=0..67.

Formula

Equals A007305 + 2*A007306.

Crossrefs

Cf. A007305, A007306.

Sequence in context: A086539 A171217 A344591 * A187332 A326917 A001857

Adjacent sequences: A049465 A049466 A049467 * A049469 A049470 A049471

Keyword

nonn,easy,tabf

Author

Gregory V. Richardson

Status

approved