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4 questions
10
votes
1
answer
207
views
Generating function for A225114
Let $a(n)$ be A225114 (i.e., number of skew partitions of $n$ whose diagrams have no empty rows and columns).
Let $b(n)$ be an integer sequence with generating function $B(x)$ such that
$$
B(x) = \...
6
votes
1
answer
260
views
Tanglegrams and functional equations of M. Somos
Recent references on the matter at hand include, a lecture slide The Konvalinka-Amdeberhan conjecture
and plethystic inverses and a preprint on Counting tanglegrams with species by I. Gessel; the ...
1
vote
0
answers
177
views
Holonomic generating function
Let $\lambda$ denote a hook of size $d$ and $c(\Box)$ the content of $ \Box \in \lambda $. Let $ \text{Hooks}(d) $ be the set of hooks with $d$ boxes. Define
\begin{align}
B(d)&=
\frac{1}{d!h^{d-1}...
13
votes
3
answers
894
views
Examples of specializations of elementary symmetric polynomials
Let $\mathcal{S}_{x}=\{x_{1,},x_{2},\ldots x_{n}\}$ be a set of $n$
indeterminates. The $h^{th}$elementary symmetric polynomial is the
sum of all monomials with $h$ factors
\begin{eqnarray*}
e_{h}(\...