A049465 Replace each fraction p/q in Farey tree A007305/A007306 with 2p + q.

1, 3, 4, 5, 7, 6, 9, 11, 10, 7, 11, 14, 13, 15, 18, 17, 13, 8, 13, 17, 16, 19, 23, 22, 17, 19, 26, 29, 25, 24, 27, 23, 16, 9, 15, 20, 19, 23, 28, 27, 21, 24, 33, 37, 32, 31, 35, 30, 21, 23, 34, 41, 37, 40, 47, 43, 32, 31, 41, 44, 37, 33, 36, 29, 19, 10, 17, 23, 22

Offset

0,2

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..68.

Formula

Equals 2*A007305 + A007306.

Crossrefs

Sequence in context: A154665 A056190 A202702 * A196122 A247140 A269304

Adjacent sequences: A049462 A049463 A049464 * A049466 A049467 A049468

Keyword

nonn,easy,tabf

Author

Gregory V. Richardson

Status

approved