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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.

A124506 Number of numerical semigroups with Frobenius number n; that is, numerical semigroups for which the largest integer not belonging to them is n.

Table of values

n a(n)
1 1
2 1
3 2
4 2
5 5
6 4
7 11
8 10
9 21
10 22
11 51
12 40
13 106
14 103
15 200
16 205
17 465
18 405
19 961
20 900
21 1828
22 1913
23 4096
24 3578
25 8273
26 8175
27 16132
28 16267
29 34903
30 31822
31 70854
32 68681
33 137391
34 140661
35 292081
36 270258
37 591443
38 582453
39 1156012

List of values

[1, 1, 2, 2, 5, 4, 11, 10, 21, 22, 51, 40, 106, 103, 200, 205, 465, 405, 961, 900, 1828, 1913, 4096, 3578, 8273, 8175, 16132, 16267, 34903, 31822, 70854, 68681, 137391, 140661, 292081, 270258, 591443, 582453, 1156012]

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

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