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Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!) A084981 Numbers all of whose proper divisors are palindromic. 0 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 21, 22, 23, 25, 27, 29, 31, 33, 35, 37, 41, 43, 44, 47, 49, 53, 55, 59, 61, 66, 67, 71, 73, 77, 79, 83, 88, 89, 97, 99, 101, 103, 107, 109, 113, 121, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179 (list; graph; refs; listen; history; text; internal format) OFFSET 1,2 COMMENTS 77566 is in the sequence because its proper divisors are: 1, 2, 38783. LINKS Table of n, a(n) for n=1..66. CROSSREFS Cf. A062687. Sequence in context: A346132 A320249 A309066 * A326880 A359077 A078453 Adjacent sequences: A084978 A084979 A084980 * A084982 A084983 A084984 KEYWORD nonn,base AUTHOR Meenakshi Srikanth (menakan_s(AT)yahoo.com), Jun 27 2003 EXTENSIONS Edited by Jason Earls, May 13 2004 STATUS approved

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Last modified August 18 09:15 EDT 2024. Contains 375264 sequences. (Running on oeis4.)