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.

A344056 a(n) = (2*n)! * hypergeom([3/2, 2, 1-n], [3, 2 - 2*n], 4) for n >= 1 and a(0) = 1.

Table of values

n a(n)
0 1
1 2
2 72
3 3960
4 354816
5 47952000
6 9169459200
7 2363720486400
8 791505727488000
9 334400903553024000
10 174128130895380480000
11 109627479651269099520000
12 82122139255681984757760000
13 72210265570358144925696000000
14 73668698593180294904178278400000
15 86324332785379145107697958912000000

List of values

[1, 2, 72, 3960, 354816, 47952000, 9169459200, 2363720486400, 791505727488000, 334400903553024000, 174128130895380480000, 109627479651269099520000, 82122139255681984757760000, 72210265570358144925696000000, 73668698593180294904178278400000, 86324332785379145107697958912000000]