1641030105

Appears in sequences

• Coefficients of Legendre polynomials.at n=10A001795
• Numerators in expansion of sqrt(1+x). Absolute values give numerators in expansion of sqrt(1-x).at n=21A002596
• Numerator of Maclaurin expansion of (t*sqrt(t^2+1) + arcsinh(t))/2, the arc length of Archimedes' spiral.at n=21A091154
• Numerator of Catalan(n)/2^(2n+1). Also, numerators of (2n-1)!!/(n+1)!. Odd part of the n-th Catalan number.at n=20A098597
• Numerator of moments of Chebyshev U- (or S-) polynomials.at n=40A134828
• Denominator of Integral_{x=0..+oo} Polylog(-n, -x)^2 for n > 0, with a(0) = 1.at n=19A181131
• The denominators of the subdiagonal in the difference table of the Bernoulli numbers.at n=19A190339
• a(n) = A190339(n)/A224911(n).at n=20A238691
• Denominators of the sequence of rational numbers Rn+ related to Bernoulli numbers.at n=19A308402