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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.

A134174 a(n) = Sum_{k=0..n} (-1)^(n-k) * binomial(n,k) * binomial(2^k,n).

Table of values

n a(n)
0 1
1 1
2 4
3 44
4 1546
5 180096
6 69656776
7 90247564712
8 398349418563148
9 6107204301234263072
10 331155704662551903747856
11 64494012244416274972130226976
12 45679970430008422082570864807000804
13 118841746271330792971612314663523090972880
14 1144692720783363684402532942114790915481788335224

List of values

[1, 1, 4, 44, 1546, 180096, 69656776, 90247564712, 398349418563148, 6107204301234263072, 331155704662551903747856, 64494012244416274972130226976, 45679970430008422082570864807000804, 118841746271330792971612314663523090972880, 1144692720783363684402532942114790915481788335224]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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