6690585

Appears in sequences

• Fermat coefficients.at n=19A000973
• Member k=5 of a family of generalized Catalan numbers.at n=7A130564
• a(0) = 1; a(n) = Sum_{k=0..floor((n-1)/5)} a(5*k) * a(n-1-5*k).at n=39A386379