1,1

The next term is too large to include.

Harry J. Smith, Table of n, a(n) for n = 1..5

Eric Weisstein's World of Mathematics, Super Catalan Number

(PARI) s(m)= { if (m==1, return(a1)); if (m==2, return(a2)); r = (3*(2*m - 3)*a2 - (m - 3)*a1)/m; a1=a2; a2=r; return(r); } { a1=1; a2=1; n=0; for (m=1, 300, a=s(m); if (isprime(a), write("b092840.txt", n++, " ", a))); } \\ Harry J. Smith, Jun 21 2009

Cf. A001003, A092839.

Sequence in context: A125738 A334176 A332771 * A007156 A289170 A060346

Adjacent sequences: A092837 A092838 A092839 * A092841 A092842 A092843

nonn

Eric W. Weisstein, Mar 07 2004

approved