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Sum of digits of Catalan numbers.
0

%I #6 Oct 24 2023 19:31:13

%S 1,1,2,5,5,6,6,15,8,20,29,34,13,22,27,45,36,42,42,42,30,39,48,45,54,

%T 54,53,56,65,49,64,73,84,39,75,73,106,79,83,95,77,90,99,90,108,99,90,

%U 135,126,117,135,126,135,132,141

%N Sum of digits of Catalan numbers.

%Y Cf. A000108.

%K nonn,base

%O 0,3

%A _N. J. A. Sloane_