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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.

A159478 a(n) = 2^(n^2+n) * C(1/2^n, n).

Table of values

n a(n)
0 1
1 2
2 -6
3 140
4 -14570
5 6283452
6 -11049839724
7 78893138035608
8 -2282580118745565210
9 267227101453296251927660
10 -126415241162450125116966673796
11 241332381844862786094865482962203112
12 -1857025703922208959523779453799872508349700

List of values

[1, 2, -6, 140, -14570, 6283452, -11049839724, 78893138035608, -2282580118745565210, 267227101453296251927660, -126415241162450125116966673796, 241332381844862786094865482962203112, -1857025703922208959523779453799872508349700]

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

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