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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.

A383380 Expansion of e.g.f. exp(-2*x) / (1-x)^4.

Table of values

n a(n)
0 1
1 2
2 8
3 40
4 248
5 1808
6 15136
7 142784
8 1496960
9 17254144
10 216740864
11 2945973248
12 43065951232
13 673626675200
14 11224114860032
15 198447384666112
16 3710328985124864
17 73136238041563136
18 1515739708283944960
19 32947698735175172096
20 749499782353468522496
21 17806903161183314378752

List of values

[1, 2, 8, 40, 248, 1808, 15136, 142784, 1496960, 17254144, 216740864, 2945973248, 43065951232, 673626675200, 11224114860032, 198447384666112, 3710328985124864, 73136238041563136, 1515739708283944960, 32947698735175172096, 749499782353468522496, 17806903161183314378752]

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

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