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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.

A304968 Number of labeled hypertrees spanning some subset of {1,...,n}, with singleton edges allowed.

Table of values

n a(n)
0 1
1 2
2 7
3 48
4 621
5 12638
6 351987
7 12426060
8 531225945
9 26674100154
10 1538781595999
11 100292956964456
12 7288903575373509
13 584454485844541718
14 51256293341752583499
15 4880654469385955209092
16 501471626403154217825457
17 55300894427785157597436786

List of values

[1, 2, 7, 48, 621, 12638, 351987, 12426060, 531225945, 26674100154, 1538781595999, 100292956964456, 7288903575373509, 584454485844541718, 51256293341752583499, 4880654469385955209092, 501471626403154217825457, 55300894427785157597436786]

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

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