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 A030995 9-automorphic numbers ending in 5: final digits of 9*n^2 agree with n. 1
 5, 25, 625, 5625, 65625, 765625, 4765625, 34765625, 134765625, 3134765625, 13134765625, 213134765625, 2213134765625, 62213134765625, 362213134765625, 7362213134765625, 17362213134765625 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS a(n) is the unique positive integer less than 10^n such that a(n) is divisible by 5^n and 9*a(n) - 1 is divisible by 2^n. - Eric M. Schmidt, Aug 18 2012 LINKS Eric M. Schmidt, Table of n, a(n) for n = 1..1000 Eric Weisstein's World of Mathematics, Automorphic Number PROG (Sage) [crt(inverse_mod(9, 2^n), 0, 2^n, 5^n) for n in xrange(1, 1001)] # Eric M. Schmidt, Aug 18 2012 CROSSREFS Sequence in context: A078260 A007185 A175852 * A067270 A215118 A218150 Adjacent sequences:  A030992 A030993 A030994 * A030996 A030997 A030998 KEYWORD nonn,base AUTHOR STATUS approved

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Last modified June 25 04:00 EDT 2019. Contains 324344 sequences. (Running on oeis4.)