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.

A090374 Number of rooted planar 4-constellations with n quadrangles: rooted planar maps with bicolored faces having n black quadrangular faces and an arbitrary number of white faces of degrees multiple to 4.

Table of values

n a(n)
1 1
2 10
3 160
4 3200
5 72960
6 1813504
7 47923200
8 1325629440
9 37991219200
10 1120005652480
11 33789432561664
12 1039157228994560
13 32480974549811200
14 1029463445864448000
15 33023079530417356800
16 1070513886720329515008
17 35026358912891580579840
18 1155516042520241436098560

List of values

[1, 10, 160, 3200, 72960, 1813504, 47923200, 1325629440, 37991219200, 1120005652480, 33789432561664, 1039157228994560, 32480974549811200, 1029463445864448000, 33023079530417356800, 1070513886720329515008, 35026358912891580579840, 1155516042520241436098560]