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.

A307660 E.g.f. A(x) satisfies: A(x) = exp(-x) * A(x^2)*A(x^3)*A(x^4)* ... *A(x^k)* ...

Table of values

n a(n)
0 1
1 -1
2 -1
3 -1
4 -23
5 139
6 -929
7 12011
8 -54319
9 664343
10 7497631
11 17751799
12 -1294263431
13 13183537379
14 335384855807
15 -8293330879261
16 26192873684641
17 -1587651616174289
18 12035003736999871
19 -887536237005983377
20 13114291271436277001
21 -332542758207041951941
22 2683832751567973018399

List of values

[1, -1, -1, -1, -23, 139, -929, 12011, -54319, 664343, 7497631, 17751799, -1294263431, 13183537379, 335384855807, -8293330879261, 26192873684641, -1587651616174289, 12035003736999871, -887536237005983377, 13114291271436277001, -332542758207041951941, 2683832751567973018399]

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

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