Sequences

a(n) = Sum_{d|n, d <= 3} d^2 + 3*Sum_{d|n, d>3} d.

Least integer having Radon random number n.

a(n) = 2^n - 1 - n*(n+1)/2.

a(n) = 2^n - C(n,0) - C(n,1) - C(n,2) - C(n,3).

a(n) = 2^n - C(n,0) - ... - C(n,4).

Continued fraction expansion of Lehmer's constant.

Continued cotangent for square root of 2.

Continued cotangent for Pi.

Continued cotangent for e.

Numerator of constant term in polynomial arising from numerical integration formula.

Denominator of constant term in polynomial arising from numerical integration formula.

a(n) = 4^n*(2*n+1)!.

Denominators of central difference coefficients M_{3}^(2n+1).

Numerators of central difference coefficients M_{3}^(2n+1).

a(n) = (2n)!/2.

Numerators of coefficients for central differences M_{4}^(2*n).

Denominators of coefficients for central differences M_{4}^(2*n).

Denominators of coefficients for central differences M_{3}'^(2*n+1).

Numerators of the Taylor coefficients of (e^x-1)^2.

Denominator of 2*Stirling_2(n,2)/n!.

Denominators of coefficients of polynomials arising from Chebyshev quadrature.

Numerators of coefficients for repeated integration.

Denominators of coefficients for repeated integration.

Numerators of coefficients for repeated integration.

Denominators of coefficients for repeated integration.

Coefficients for numerical integration.

Coefficients for numerical integration.

Numerators of coefficients for repeated integration.

Denominators of coefficients for repeated integration.

Denominators of coefficients for repeated integration.

a(n) = (n+1) * (2*n)! / n!.

a(n) = (n+2) * (2n+1) * (2n-1)! / (n-1)!.

Not integral, withdrawn.

Not integral, withdrawn.

Binomial coefficients C(2n, n-2).

P_n'(3), where P_n is n-th Legendre polynomial.

Binomial coefficients C(2n,n-3).

a(n) = n*4^(n-1).

Coefficients of Chebyshev polynomials: n*(2*n-3)*2^(2*n-5).

a(n) = n*2^(2*n-1).

Coefficients of Chebyshev polynomials: n*(2*n+1) * 4^(n-1).

Coefficients for numerical differentiation.

Coefficients for numerical differentiation.

Sets with a congruence property.

Number of sets with a congruence property.

Sets with a congruence property.

Theta series of 6-dimensional lattice A_6^(2) (other names for this lattice or the corresponding quadratic form are LAMBDA_{3,lambda}, P_6^(5), phi_6, F_14).

Number of ternary trees with n nodes.

a(n) = Fibonacci(n) mod n.

Triangulations of the disk G_{n,0}.