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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.

A053484 Numerators in expansion of exp(2x)/(1-x).

Table of values

n a(n)
0 1
1 3
2 5
3 19
4 7
5 109
6 331
7 155
8 2327
9 20947
10 34913
11 164591
12 691283
13 14977801
14 314533829
15 4718007451
16 1572669151
17 16041225341
18 103122162907
19 4571749222213
20 68576238333199
21 110777000384399
22 55582845806909
23 364345554264288511

List of values

[1, 3, 5, 19, 7, 109, 331, 155, 2327, 20947, 34913, 164591, 691283, 14977801, 314533829, 4718007451, 1572669151, 16041225341, 103122162907, 4571749222213, 68576238333199, 110777000384399, 55582845806909, 364345554264288511]

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

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