%I #22 Dec 07 2019 12:18:21
%S 4,64,264,3264,23264,123264,4123264,54123264,754123264,5754123264,
%T 75754123264,675754123264,6675754123264,26675754123264,
%U 526675754123264,1526675754123264,71526675754123264
%N 9-automorphic numbers ending in 4: final digits of 9*n^2 agree with n.
%C a(n) is the unique positive integer less than 10^n such that a(n) is divisible by 2^n and 9*a(n) - 1 is divisible by 5^n. - _Eric M. Schmidt_, Aug 18 2012
%H Eric M. Schmidt, <a href="/A030994/b030994.txt">Table of n, a(n) for n = 1..1000</a>
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/AutomorphicNumber.html">Automorphic Number</a>
%H <a href="/index/Ar#automorphic">Index entries for sequences related to automorphic numbers</a>
%H <a href="/index/Fi#final">Index entries for sequences related to final digits of numbers</a>
%o (Sage) [crt(0, inverse_mod(9, 5^n), 2^n, 5^n) for n in range(1, 1001)] # _Eric M. Schmidt_, Aug 18 2012
%K nonn,base
%O 1,1
%A _Eric W. Weisstein_