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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.

A279020 a(n) = unreduced numerator in Sum_{k=1..n} (-1)^(k-1)/k^k.

Table of values

n a(n)
0 0
1 1
2 3
3 85
4 21652
5 67690148
6 3158065145088
7 2600806474859606784
8 43634288683151793919033344
9 16904817514490272003065681518985216
10 169048175123324778807714958980684133171200000
11 48231417258392463006590622244366007983063473271603200000

List of values

[0, 1, 3, 85, 21652, 67690148, 3158065145088, 2600806474859606784, 43634288683151793919033344, 16904817514490272003065681518985216, 169048175123324778807714958980684133171200000, 48231417258392463006590622244366007983063473271603200000]

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

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