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Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!) A174894 Numbers such that both arithmetic means of distinct and all prime factors are integers. 3 2, 3, 4, 5, 7, 8, 9, 11, 13, 15, 16, 17, 19, 21, 23, 25, 27, 29, 31, 32, 33, 35, 37, 39, 41, 42, 43, 47, 49, 51, 53, 55, 57, 59, 61, 64, 65, 67, 69, 71, 73, 77, 78, 79, 81, 83, 85, 87, 89, 91, 93, 95, 97, 101 (list; graph; refs; listen; history; text; internal format) OFFSET 1,1 COMMENTS Subsequence of A078174 and A078175. Complement of A176552. [From Jaroslav Krizek, Apr 21 2010] LINKS Table of n, a(n) for n=1..54. EXAMPLE For a(11) = 16: 16 = 2^4; both (2+2+2+2)/4 and 2/1 are integers. CROSSREFS Sequence in context: A360552 A373852 A078174 * A275616 A088948 A369096 Adjacent sequences: A174891 A174892 A174893 * A174895 A174896 A174897 KEYWORD nonn AUTHOR Jaroslav Krizek, Apr 01 2010 STATUS approved

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Last modified August 18 13:06 EDT 2024. Contains 375269 sequences. (Running on oeis4.)