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.

A009248 Expansion of e.g.f.: exp(tan(x).exp(x)).

Table of values

n a(n)
0 1
1 1
2 3
3 12
4 57
5 332
6 2209
7 16730
8 140609
9 1302664
10 13137441
11 143354574
12 1680017889
13 21043179068
14 280310970385
15 3955899181730
16 58931602709633
17 923925812276752
18 15201851967182913
19 261859798838325270

List of values

[1, 1, 3, 12, 57, 332, 2209, 16730, 140609, 1302664, 13137441, 143354574, 1680017889, 21043179068, 280310970385, 3955899181730, 58931602709633, 923925812276752, 15201851967182913, 261859798838325270]

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

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