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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.

A027845 Number of subgroups of index n in fundamental group of a certain fiber space.

Table of values

n	a(n)
1	1
2	15
3	43
4	371
5	1321
6	11979

List of values

[1, 15, 43, 371, 1321, 11979]

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

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