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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.

A158279 Number of pseudo-symmetric numerical semigroups with Frobenius number 2*n; that is, pseudo-symmetric numerical semigroups for which the largest integer not belonging to them is 2*n.

Table of values

n a(n)
1 1
2 1
3 1
4 2
5 3
6 2
7 6
8 7
9 7
10 11
11 20
12 14
13 35
14 37
15 36
16 70
17 106
18 77
19 182

List of values

[1, 1, 1, 2, 3, 2, 6, 7, 7, 11, 20, 14, 35, 37, 36, 70, 106, 77, 182]

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

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