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.

A339017 E.g.f.: exp(2 * (exp(x) - 1 - x - x^2 / 2 - x^3 / 6)).

Table of values

n a(n)
0 1
1 0
2 0
3 0
4 2
5 2
6 2
7 2
8 142
9 506
10 1346
11 3170
12 53198
13 375234
14 1880738
15 7919082
16 72104190
17 678488362
18 5164781154
19 33220643026
20 271431061614
21 2710340281426
22 26278673924322
23 228727591600826
24 2081516848032222
25 21560234032116154
26 236863265302626722
27 2521687569105476002

List of values

[1, 0, 0, 0, 2, 2, 2, 2, 142, 506, 1346, 3170, 53198, 375234, 1880738, 7919082, 72104190, 678488362, 5164781154, 33220643026, 271431061614, 2710340281426, 26278673924322, 228727591600826, 2081516848032222, 21560234032116154, 236863265302626722, 2521687569105476002]

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

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