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.

A248653 E.g.f.: Sum_{n>=0} x^n * (2 + exp(n*x))^n.

Table of values

n a(n)
0 1
1 3
2 20
3 237
4 4276
5 107225
6 3518526
7 145005721
8 7285611096
9 436297841649
10 30590014543930
11 2474931380486081
12 228308751882636756
13 23772216923031342649
14 2769853988736186166374
15 358463639909150646730665
16 51192480930691715108562736
17 8021370202848006225125239649

List of values

[1, 3, 20, 237, 4276, 107225, 3518526, 145005721, 7285611096, 436297841649, 30590014543930, 2474931380486081, 228308751882636756, 23772216923031342649, 2769853988736186166374, 358463639909150646730665, 51192480930691715108562736, 8021370202848006225125239649]

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

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