DawsonF
(Built-in Mathematica Symbol) DawsonF[z] gives the Dawson integral F(z).
DedekindEta[\[Tau]] gives the Dedekind eta modular elliptic function \[Eta](\[Tau]).
DigitCount[n, b, d] gives the number of d digits in the base-b representation of n. DigitCount[n, b] gives a list of the numbers of 1, 2, ..., b - 1, 0 digits in the base-b ...
DirichletL[k, j, s] gives the Dirichlet L-function L(\[Chi], s) for the Dirichlet character \[Chi](n) with modulus k and index j.
EllipticNomeQ[m] gives the nome q corresponding to the parameter m in an elliptic function.
FiniteAbelianGroupCount[n] gives the number of finite Abelian groups of order n.
GridBox
(Built-in Mathematica Symbol) GridBox[{{box_11, box_12, ...}, {box_21, box_22, ...}, ...}] is a low-level box construct that represents a two-dimensional grid of boxes or strings in notebook expressions.
HankelH1[n, z] gives the Hankel function of the first kind H_n^(1)(z).
HankelH2[n, z] gives the Hankel function of the second kind H_n^(2)(z).
HurwitzLerchPhi[z, s, a] gives the Hurwitz\[Dash]Lerch transcendent \[CapitalPhi](z, s, a).