A334575 - OEIS

%I #15 May 18 2020 07:00:10

%S 1,2,10,2002,52860229080,53570336911983273963270306331114400

%N a(n) = binomial(C(n+1),C(n)) where C(n) = A000108(n) the n-th Catalan number.

%Y Cf. A000108, A058077, A066526, A080911.

%K nonn

%O 0,2

%A _Henry Cryns_, May 06 2020