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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.

A274275 E.g.f. A(x) satisfies: A( sqrt( A(x^2*exp(-2*x)) ) ) = x.

Table of values

n a(n)
1 1
2 2
3 6
4 40
5 400
6 4656
7 62944
8 1046144
9 20274048
10 438238720
11 10529132416
12 280439144448
13 8185848206848
14 259202608222208
15 8855252721592320
16 324989707586830336
17 12748521382531956736
18 532098814401540587520
19 23547710868033300004864
20 1101540715832518509854720
21 54307901369414002580422656
22 2814303585179538846791237632
23 152935335939643406489642008576
24 8696644113583584719506275041280
25 516469893784923819203984490496000

List of values

[1, 2, 6, 40, 400, 4656, 62944, 1046144, 20274048, 438238720, 10529132416, 280439144448, 8185848206848, 259202608222208, 8855252721592320, 324989707586830336, 12748521382531956736, 532098814401540587520, 23547710868033300004864, 1101540715832518509854720, 54307901369414002580422656, 2814303585179538846791237632, 152935335939643406489642008576, 8696644113583584719506275041280, 516469893784923819203984490496000]

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

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