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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.

A373065 Expansion of e.g.f. (1/2)*(x^2*exp(x))*(cosh(x))^2.

Table of values

n a(n)
0 0
1 0
2 1
3 3
4 18
5 70
6 315
7 1281
8 5124
9 19692
10 73845
11 270655
12 974358
13 3454386
14 12090351
15 41851005
16 143489160
17 487862872
18 1646537193
19 5520742011
20 18402473370
21 61018727070
22 201361799331
23 661617340153
24 2165293113228
25 7060738412100
26 22947399839325
27 74349575478711
28 240206320777374
29 773998144726282

List of values

[0, 0, 1, 3, 18, 70, 315, 1281, 5124, 19692, 73845, 270655, 974358, 3454386, 12090351, 41851005, 143489160, 487862872, 1646537193, 5520742011, 18402473370, 61018727070, 201361799331, 661617340153, 2165293113228, 7060738412100, 22947399839325, 74349575478711, 240206320777374, 773998144726282]

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