Pomerance, Carl Popular values of Euler’s function. (English) Zbl 0437.10001 Mathematika 27, 84-89 (1980). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 5 ReviewsCited in 34 Documents MSC: 11A25 Arithmetic functions; related numbers; inversion formulas Keywords:maximal order; Brun-Titchmarsh theorem; Euler’s phi-function Citations:Zbl 0012.14905; Zbl 0074.271; Zbl 0288.10013 PDFBibTeX XMLCite \textit{C. Pomerance}, Mathematika 27, 84--89 (1980; Zbl 0437.10001) Full Text: DOI Online Encyclopedia of Integer Sequences: Number of solutions to phi(k) = 2n. References: [1] Erdös, Publ. Math. Debrecen 4 pp 201– (1956) [2] DOI: 10.1093/qmath/os-6.1.205 · JFM 61.0129.05 · doi:10.1093/qmath/os-6.1.205 [3] de Bruijn, Nederl. Akad. Wetensch. Proc. Ser 38 pp 239– (1966) · doi:10.1016/S1385-7258(66)50029-4 [4] Bateman, Acta Arith 21 pp 329– (1972) [5] Erdös, Mathematika 23 pp 1– (1976) [6] DOI: 10.2307/2038881 · Zbl 0254.10009 · doi:10.2307/2038881 [7] Hooley, Mathematika 20 pp 135– (1973) [8] Hardy, An introduction to the theory of numbers (1960) · Zbl 0086.25803 [9] Goldfeld, Mathematika 16 pp 23– (1969) [10] DOI: 10.2307/2042994 · Zbl 0386.10004 · doi:10.2307/2042994 This reference list is based on information provided by the publisher or from digital mathematics libraries. Its items are heuristically matched to zbMATH identifiers and may contain data conversion errors. In some cases that data have been complemented/enhanced by data from zbMATH Open. This attempts to reflect the references listed in the original paper as accurately as possible without claiming completeness or a perfect matching.