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 A092359 Let R_{k}(m) = the digit reversal of m in base k (R_{k}(m) is written in base 10). a(n) is the smallest y such that there are exactly n bases {k} (k >= 2 and (x < y)) solutions of the equation: R_{k}(x) = y and R_{k}(y) = x. 0
 7, 19, 61, 193 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Table of n, a(n) for n=1..4. EXAMPLE a(2)=19 because there are two solutions: R_{3}(11) = 19 and R_{3}(19) = 11, R_{9}(11) = 19 and R_{9}(19) = 11. CROSSREFS Cf. A004086, A030101-A030108, A056960-A056963, A037183, A091974. Sequence in context: A229442 A179406 A165683 * A259797 A155338 A155401 Adjacent sequences: A092356 A092357 A092358 * A092360 A092361 A092362 KEYWORD more,nonn,base AUTHOR Naohiro Nomoto, Mar 18 2004 STATUS approved

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Last modified July 20 20:50 EDT 2024. Contains 374459 sequences. (Running on oeis4.)