New integer sequence OEIS A392714 counts Wronskians: fast evaluation via late-growing permutations

Kian C. Shah, Arthemy V. Kiselev

The alternating composition of $N=2p$ weighted differential operators $w_j(x)\cdot {\partial }_x^p$ of strict order $p$ on the line $\mathbb{R}\ni x$ is again an operator of ord…