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.

A211421 Integral factorial ratio sequence: a(n) = (8*n)!*(3*n)!/((6*n)!*(4*n)!*n!).

Table of values

n a(n)
0 1
1 14
2 390
3 12236
4 404550
5 13777764
6 478273692
7 16825310040
8 597752648262
9 21397472070260
10 770557136489140
11 27884297395587240
12 1013127645555452700
13 36935287875280348776
14 1350441573221798941560
15 49498889739033621986736
16 1818284097150186829038150

List of values

[1, 14, 390, 12236, 404550, 13777764, 478273692, 16825310040, 597752648262, 21397472070260, 770557136489140, 27884297395587240, 1013127645555452700, 36935287875280348776, 1350441573221798941560, 49498889739033621986736, 1818284097150186829038150]