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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.

A243918 a(n) = Sum_{k=0..n} binomial(n,k) * (1 + 2^k)^k.

Table of values

n a(n)
0 1
1 4
2 32
3 814
4 86600
5 39560554
6 75654970772
7 594996059517934
8 19035905851947436400
9 2460857798358946973785234
10 1280109151917797032199865564812
11 2672783800502564772495577135824089014
12 22366199286781599568269093307412768076442280

List of values

[1, 4, 32, 814, 86600, 39560554, 75654970772, 594996059517934, 19035905851947436400, 2460857798358946973785234, 1280109151917797032199865564812, 2672783800502564772495577135824089014, 22366199286781599568269093307412768076442280]

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

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