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.

A368298 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+n) with i,j = 0, ..., n-1.

Table of values

n a(n)
0 1
1 1
2 53
3 490614
4 930744290905
5 386735380538157813864
6 36494318768452684668237864399892
7 800075179375382235705309991148469060609055210
8 4138855242465150993428071754285859188133806122546895149328625
9 5109461743591866972924602083859433690113667142460933537037028649653229023827000

List of values

[1, 1, 53, 490614, 930744290905, 386735380538157813864, 36494318768452684668237864399892, 800075179375382235705309991148469060609055210, 4138855242465150993428071754285859188133806122546895149328625, 5109461743591866972924602083859433690113667142460933537037028649653229023827000]