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.

A337387 a(n) = Sum_{k=0..n} n^(n-k) * binomial(2*k,k) * binomial(2*n+1,2*k).

Table of values

n a(n)
0 1
1 7
2 74
3 1175
4 24310
5 610897
6 17920356
7 598099077
8 22305598630
9 917158184525
10 41148369048876
11 1997720107411613
12 104241356841544636
13 5813083330109559415
14 344783011379207286920
15 21660231928192698604995
16 1436143861200146476260102
17 100179915387243084700279349

List of values

[1, 7, 74, 1175, 24310, 610897, 17920356, 598099077, 22305598630, 917158184525, 41148369048876, 1997720107411613, 104241356841544636, 5813083330109559415, 344783011379207286920, 21660231928192698604995, 1436143861200146476260102, 100179915387243084700279349]