cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A368023 a(n) is the permanent of the n-th order Hankel matrix of Catalan numbers M(n) whose generic element is given by M(i,j) = A000108(i+j+5) with i,j = 0, ..., n-1.

Table of values

n a(n)
0 1
1 42
2 35442
3 499114473
4 111384708171022
5 386735380538157813864
6 20749829798295730016646982120
7 17168067359133726591295713796489415774
8 219043020447199737063468653002456184101044391781
9 43136143328071407602633546712654262446417322619276001391870

List of values

[1, 42, 35442, 499114473, 111384708171022, 386735380538157813864, 20749829798295730016646982120, 17168067359133726591295713796489415774, 219043020447199737063468653002456184101044391781, 43136143328071407602633546712654262446417322619276001391870]