119409675

Appears in sequences

• Coefficients of Legendre polynomials.at n=9A001795
• Numerators in expansion of sqrt(1+x). Absolute values give numerators in expansion of sqrt(1-x).at n=19A002596
• Numerators of coefficients of 1/2^(2n+1) in Newton's series for Pi.at n=20A054387
• Numerator of Catalan(n)/2^(2n+1). Also, numerators of (2n-1)!!/(n+1)!. Odd part of the n-th Catalan number.at n=18A098597
• Numerator of moments of Chebyshev U- (or S-) polynomials.at n=36A134828