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.

A307538 G.f. A(x) satisfies: A(x) = x*exp(2*A(-x) + 2*A(-x^3)/3 + 2*A(-x^5)/5 + 2*A(-x^7)/7 + 2*A(-x^9)/9 + ...).

Table of values

n a(n)
0 0
1 1
2 -2
3 -2
4 10
5 14
6 -86
7 -126
8 858
9 1302
10 -9378
11 -14606
12 108954
13 172698
14 -1319966
15 -2119118
16 16489594
17 26731542
18 -210887998
19 -344490170
20 2747510514
21 4515757426
22 -36336187630
23 -60023827438
24 486540793914
25 807121753178
26 -6582918170714
27 -10959656342678
28 89860260268098

List of values

[0, 1, -2, -2, 10, 14, -86, -126, 858, 1302, -9378, -14606, 108954, 172698, -1319966, -2119118, 16489594, 26731542, -210887998, -344490170, 2747510514, 4515757426, -36336187630, -60023827438, 486540793914, 807121753178, -6582918170714, -10959656342678, 89860260268098]

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

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