ChebyshevU (Built-in Mathematica Symbol)

ChebyshevU[n, x] gives the Chebyshev polynomial of the second kind U_n (x).

FourierSinCoefficient (Built-in Mathematica Symbol)

FourierSinCoefficient[expr, t, n] gives the n\[Null]^th coefficient in the Fourier sine series expansion of expr.FourierSinCoefficient[expr, {t_1, t_2, ...}, {n_1, n_2, ...}] ...

HarmonicNumber (Built-in Mathematica Symbol)

HarmonicNumber[n] gives the n\[Null]^th harmonic number H_n. HarmonicNumber[n, r] gives the harmonic number H_n^(r) of order r.

StirlingS1 (Built-in Mathematica Symbol)

StirlingS1[n, m] gives the Stirling number of the first kind S_n^(m).

PascalDistribution (Built-in Mathematica Symbol)

PascalDistribution[n, p] represents a Pascal distribution with parameters n and p.

BernoulliB (Built-in Mathematica Symbol)

BernoulliB[n] gives the Bernoulli number B_n. BernoulliB[n, x] gives the Bernoulli polynomial B_n (x).

PrimePi (Built-in Mathematica Symbol)

PrimePi[x] gives the number of primes \[Pi] (x) less than or equal to x.

SquaresR (Built-in Mathematica Symbol)

SquaresR[d, n] gives the number of ways r_d (n) to represent the integer n as a sum of d squares.

UniformSumDistribution (Built-in Mathematica Symbol)

UniformSumDistribution[n] represents the distribution of a sum of n random variables uniformly distributed from 0 to 1.UniformSumDistribution[n, {min, max}] represents the ...

NHoldRest (Built-in Mathematica Symbol)

NHoldRest is an attribute which specifies that all but the first argument to a function should not be affected by N.