Hofstadter's Q-Sequence
The Integer Sequence given by
with
. The first few values are 1, 1, 2, 3, 3, 4, 5, 5, 6, 6, ... (Sloane's A005185; illustrated above). Thesenumbers are sometimes called Q-Number.See also Hofstadter-Conway $10,000 Sequence, Mallow's Sequence
References
Conolly, B. W. ``Meta-Fibonacci Sequences.'' In Fibonacci and Lucas Numbers, and the Golden Section (Ed. S. Vajda). New York: Halstead Press, pp. 127-138, 1989. Guy, R. ``Some Suspiciously Simple Sequences.'' Amer. Math. Monthly 93, 186-191, 1986. Hofstadter, D. R. Gödel, Escher Bach: An Eternal Golden Braid. New York: Vintage Books, pp. 137-138, 1980. Pickover, C. A. ``The Crying of Fractal Batrachion 1,489.'' Ch. 25 in Keys to Infinity. New York: W. H. Freeman, pp. 183-191, 1995. Sloane, N. J. A. SequenceA005185/M0438in ``An On-Line Version of the Encyclopedia of Integer Sequences.''http://www.research.att.com/~njas/sequences/eisonline.html and Sloane, N. J. A. and Plouffe, S.The Encyclopedia of Integer Sequences. San Diego: Academic Press, 1995.
- Theta Subgroup
- Thiele's Interpolation Formula
- Thiessen Polytope
- Third Curvature
- Thirteenth
- Thomae's Theorem
- Thomassen Graph
- Thompson Group
- Thompson's Functions
- Thom's Eggs
- Collineation
- Cologarithm
- Colon Product
- Colorable
- Coloring
- Columbian Number
- Colunar Triangle
- Comb Function
- Combination
- Combination Lock
- Combinatorial Species
- Combinatorial Topology
- Combinatorics
- Comma Derivative
- Comma of Didymus