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%I #10 Feb 16 2025 08:32:59
%S 1,5,57,598,6015,60199,602051,6020590,60205987,602059978,6020599899,
%T 60205999117,602059991310,6020599913260,60205999132775,
%U 602059991327940,6020599913279600,60205999132796214
%N Number of decimal digits in the 10^n-th Catalan number.
%H Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/CatalanNumber.html">Catalan Number</a>
%t Table[IntegerLength[CatalanNumber[10^n]], {n, 0, 9}] (* The program generates the first 10 terms of the sequence. To generate more, increase the "9" constant but the program may take a long time to run. *) (* _Harvey P. Dale_, Sep 01 2021 *)
%Y Cf. A000108, A114493.
%K nonn,base
%O 0,2
%A _Eric W. Weisstein_, Nov 29 2005
%E Edited by _Charles R Greathouse IV_, Aug 05 2010